It is dangerous to rely on Exodus wallet to secure a lot of money, and since you use hardware wallet, I assume you are saving a lot of money.
Also, USDT is on several platforms, so it is better to use trust wallet with it and send it to Trezor Hardware wallet.
It's not really "dangerous" if you're using a Trezor (or other compatible hardware wallet)... in general, the software wallet you are using in combination with a hardware wallet is not
that important, provided of course that you pay attention to what the hardware wallet is displaying/telling you in regards to the outputs being created/sent... and addresses being generated for receiving etc.
The obvious downside to Exodus is simply that it dictates fees... there isn't even any "low priority", "high priority", let alone a "custom" setting... and from what I've seen, the fees it
suggests "enforces", are generally over-estimated which will result in extra costs.