I'm as against usdt as I am fiat in general, but for many it serves a use case where there is no access to dollars but a need for it.
Yes bitcoin is a better solution, but it's a large pill to swallow so usdt has its use case for now. It also will probably rug people worse than their fiat does and guess where they will end up?
Again, I wish no harm onto others, but some will not take heed of warnings and our time is better spent improving bitcoin than to campaign against everything else.