At least with HabadGedir what you see is what you get.
With the Majerteens what you have are pure munafiqs. People face wise that like to extend courtesies and diplomacies but with hidden malicious intent.
I don't know why they like to segregate themselves from HG when they are both morally not that different from each other
We are different on every single level, you can class Somali's into three distinct groups when it comes to clan's, you have the pacifists, cold blooded warriors and the Cunning (fitnah) group.
The fast majority of Somali clan's fall into the warfare group, while a few go into the pacifists groups (D&M, Gaderbise, Ciise, CadCad), Reer triangle fit mostly into the Cunning/Fitnah group as you can see on sspot as well as on the ground.
Each has it's benefits and drawbacks, the issue with HG is that they are by far the worst in that large group of warrior clan's because of offensive perpetual warfare doctrines which I am not a fan off, that's why along with MJ they are the most hated groups, this is all changing now with the new generation.
I don't know why people lump MJ together, everything bad that is said about them is because of reer triangle only, I can understand why, they had to develop cunning two face mastery in order to survive otherwise they would have gone extinct, it's the only way a non warrior clan can defeat a warrior clan.
To make it worse they have the most fierce warrior clan's surround them in all directions who don't really like them, the dhullo's in the north, HG in the south, to the west they have their confederate cousins and OG's, they only survived within the darood rank because of cunning divide/conquer tactics.
This strategy doesn't work with their southern neighbours, so whenever a dispute happens and foreign troops are not available to protect them like in the past, they pull out the emotional manipulative darood card, they will bring all the other darood warrior clan's to the front-line who as you expect unlike them would fight to the last man which would result in a stalemate, had they not done this throughout history, they would have gone extinct.
This collective group psychology must be understood in order to combat this effectively, if my brother is physically weaker then me and I keep beating him up, threatening him, humiliating him and there is nothing he can do to protect himself physically, he will develop whatever traits he can in order to counter me, you essentially drive him into the hand of the enemy, he would do anything he can to survive, because intense hatred, fear, revenge & grudges combine together to a form a powerful long lasting motivator that will outlast any motivations you have.
This explains why they are the loudest most hateful groups on her, why when it comes to boasting no one competes with them, why they regard C/Yusuf as a hero, why they come up with the most cunning politician's and why politics attracts the majority of their students which other Somali's shun, because these are the best means to fight back.
In the civil war the clan that suffered the greatest losses by far was mx (after the fall of MSB), no other clan even comes close, but you won't find them acting the same because they share that same warrior spirit (which induces confidence) as a result it's a forgive/forget.
It's the same story in that 4 months fierce conflict in Xamar between Hiraab (forgive/forget), to the point were Ali Mahdi walks in HG neighbourhoods with no one saying anything (vice versa), the same is happening between MX/OG in J/land, as well as MX/HG in Mudug, Xawaadle/OG in the border areas as well as with HG, this is all basic group psychology.
This is not to be mistaken with the individual psychology of the person because not everyone is the same, however even if the individual person has a different view from his group, once push comes to shove, the herd/group/tribe mentality will always dominate.
You see examples of this in the battle of Badr when some of the Pagan's didn't want to fight their own tribes men but because of the herd mentality and being called cowards by Abu Jahl, they ended up fighting anyway, the Prophet even pointed one of them out.
Ultimately we all share in this blame and this takes a couple of generations to fix, remember the greatest of all tribes the "Ansar" were feuding for centuries in perpetual warfare before the Prophet arrived, the Jewish tribes that surrounded them were always routed in warfare by those pagan warrior tribes, as a result they developed cunning tactics and nifaq as a counter measure.
This intense hatred even resulted in them siding with the Pagan Arab's of Mecca during the battle of Ahzab against the Prophet despite the treaty to protect their own city (Medina), they remembered all the battles they lost and the humiliations that ensued when they said after each loss "wait until our Prophet comes, we will finish you all off"