As already written above, the main problem of USDT is the possibility of freezing.
But this is not relevant for all blockchains.
USDT is a good stable coins and it's the best we have in the crypto space among so many that are trying to get more adoptions just the like the USDC. TEther is also investing part of their funds in Bitcoin and have backups in most of the firms. I know that anything can happen in the crypto market but that should not make us to tarnish a good project now thatbwe are seeing the adoption and features we have and that are available for us.