Genuine question: Why is it that people hate Magua so much?

I can understand why people disliked him in the past, he was egregiously overpowered on release, but to some extent I feel like he's got "brig syndrome" where the residual hate leaves people blind to him.

To be clear, not trying to say that it's invalid to hate Magua, I just want to understand what about him people hate so much, because to me he seems remarkably similar to Winston, who people really like.

To me, Magua feels like a ground Winston. They both have fairly similar gameplay loops of leaping (or charging) into the enemy team, making space for teammates with damage-reducing abilities, and then they leave the fight following this. Magua has a bit more staying power than Winston, and Winston has vertical mobility, but otherwise I don't feel like they're too significantly different.

I really don't buy the narrative that he's "brainless" (I don't think any hero is brainless, I think that's just a bad faith argument), but the two arguments I will accept is that he enables a playstyle that's unappealing to watch, and cage is annoying. While I personally really like Brawl, I understand that it's not the most interesting to watch. I'm going to assume my indifferent to cage comes from the fact that the heroes I play either actively counter it, or just don't ever really interact with it.