As I've said in another post here, a lot of the problem is that you sent people back to beta again and again to solicit more feedback before the very most basic problems- esp. content width and comment section information density - had been addressed at all.
This gave people the impression that those things weren't going to change, and solidified in people's minds the idea that beta was horrific and that a redirect to beta was a reason to scream.
Though the present beta isn't ready, it is enough of an improvement over the earlier betas as to reassure me somewhat about the future of the site. But until a few minutes ago I had no idea of its improvements because previous horrific betas' lack of improvement over the months had trained me to avoid beta like the plague.