Since binance and okex are using it, I would use it too, I know it has been a bit shady recently but we need to use some stable coin anyway , There are many stable coins these days and I use TUSD too, I don't know which one is better actually!
I can't agree with your logic about Binance and Okeks =) I think you should not blindly follow these exchanges. As for Tether, I think this is a fairly reliable coin. In my opinion, all the negative news about Teter was more of a manipulation. If something really bad happens to Tether, then the whole cryptocurrency market will have huge problems, and no one is interested in that.