That is typical from Ethiopians in general. They are akin to the Banu Qurayza, seeking protection from a group then backstabbing them.
I grew up around a lot of xabashis/oromos and wallahi the men are extremely weak and get hoed on, no sense of pride within that group. Also you’d never know someone is Oromo until you press them about it, they’ll hide their Oromo identity for years like it’s haram for them to speak on it.
Because those guys hold allegiance to Oromos, but they have a pseudo-Somali background that causes identity issues, feeling mentally split and vague themselves (remember, Oromos are a heterogeneous cluster of mixed Ethiopians). These types also got contempt and hatred for Somalis despite pretending not to. One sees evidence of this through prior track record, or they eventually unload in their uncontrollable way.
Like that Galan bum who came here as a guest, then suddenly started to claim Oromos, who expanded in the 16th century from southern Ethiopia (this is a thoroughly established historical fact), were the guys who established cities in Somaliland prior to their expansion. They did a violent incursion after that civilization was in decline, literally, and now talk about how they were part of it. It would be like if Barbarian Germans who came later to Rome suddenly claimed they originated it.
That level of psychotic irrationality is motivated by hate and insecurities that have a delineated ethnic competitive nature, where they know we are not them, spewing projections that historically really only relate to them. Again, like that uninformed Galan saying Somalis are heterogeneous when we are the most homogenous group proven by science over and over again. On the other hand, there could not be more discrepancy in Ethiopia within an ethnic group, such as a northern Oromo and a Borana (the true Oromo ones, not the camel herding ones that were expanded upon and brought under the Borana confederacy. As these people expanded towards Kenya in Somaloid lands around the same time, they expanded north as attested by scholarship.)