So what's the exact reason then that Segwit is bad?
If you aren't able to say it in your own words instead of just dumping a like, there probably isn't any.

Besides that, this link is 22 days old. Don't you follow the news?
Bitmain-miners aren't signiling for BU because they think it's good, they signal for it to preserve their 20% additional profit from covert ASICboost, which is huge in a low margin business like mining.