When you make yourself a dictator, then yes it is fair to blame you. If he took Somalia to the level of South Korea, he would deserve a majority of the credit. As it is, he deserves a large portion of the blame. You even said it yourself in the first part of your post. That was one of his actions that inflamed clan tensions.
South Korea, Japan and Singapore are American satelitte states. The West have been helping them tremendously for the last few decades. Sure they do have a great government but that's not the only reason they are doing so well today.
Said Barre left a decent legacy when you look at his first 10 years.
I will admit they he did help create the climate needed for people to take up arms against him, however I will not accept that he is responsible for our situation today. Ethiopia had a government that starved the people for decades and they didn't even go through 1 year of violence. We chose to destroy the nation instead of moving forward. I hate it when people just offload all blame onto somebody/something else.
1991-1992 is the reason why we are in this mess. Some people allowed a bunch of animals to whip up this twisted clan fervour to destroy the nation. Where they not intelligent enough to establish themselves as the ruling class of Somalia like the Tigrays of Ethiopia ?