I wouldn't consider it humiliating. And there's a dimension this doesn't talk about: false positives. Twitter has to make an actual decision to ban an account. When they get this wrong, they have unhappy users and I'm sure articles would appear here about the terrible work they are doing. These researchers pay none of those costs about false positives. Perhaps they have a 7% false positive rate and consider that pretty good. That amounts to about 12,000 legitimate users banned.