Moreover, we'd warned you and asked you may times to follow the site guidelines before that:
https://news.ycombinator.com/item?id=26127670
https://news.ycombinator.com/item?id=25637111
https://news.ycombinator.com/item?id=25400449
https://news.ycombinator.com/item?id=24909805
https://news.ycombinator.com/item?id=24513786
https://news.ycombinator.com/item?id=23087338
https://news.ycombinator.com/item?id=18102477
If you break the rules that often and ignore that many warnings, it's not surprising that you'd end up getting banned. This was not a shadowban and not because you criticized some particular person.
All this is a pity because you posted many interesting comments in the past and we would much rather have you as a contributing user. The sad truth, though, is that the harm you cause by breaking the site guidelines exceeds the good you contribute with the interesting comments—so I don't think we made the wrong call.