I'm not arguing, just discussing. Most of this is just our opinions, after all.
I have seen most episodes of both. The shorts may have been of higher quality than, say, the wraparound stories, but they were not given the same time, effort, resources as features, and, in my opinion, it shows.
I have no doubt the shows were extremely popular. They were on the Disney Channel at a time when premium cable watching was at its peak–especially for children's programming. But I think the quality of those shows (along with the fact that they are on YouTube), is not well-regarded internally and factors into their not being available on Disney Plus.
I mean, even in you love HoM, the quality differences seem obvious: