if you want to be safe then convert it back to fiat. whether it is the Tether you are talking about or some weird ERC20 token it doesn't matter. neither are safe, the token is probably even less safe especially since it is stealing another coin's name!
you may think Tether is safe because of all the fake promises you have heard but nobody promised any safety ever and the company issuing it is shady enough to not deserve any trust.
That is why I think that our funds should not be kept in stable coins for too long. This should be temporary and forced storage of our funds. While stable coins are very convenient to use, however, their security needs to be tested over time. The idea of stable coins is generally very good, but there are a lot of bad rumors around them.