USDT is no longer trusted — but still swapped around due to now-legacy exchanges denominating in it.
Your other points are not true for many cryptocurrencies, and for the ones it is, there are plenty of players who don't hold your concerns — right, wrong, or indifferent, they exist.
You say it's not trusted and yet the most volume in crypto (around 46 billion) is being traded every day it. Are you sure you're not just in your own thought bubble?
USDT is no longer trusted — but still swapped around due to now-legacy exchanges denominating in it.
Your other points are not true for many cryptocurrencies, and for the ones it is, there are plenty of players who don't hold your concerns — right, wrong, or indifferent, they exist.