Huh? I don't get what you're trying to say here. What do you mean 'redeem' USDT? You swap it into dollars on a CEX and deposit it into your bank account.
There are 19,000 cryptos and yeah, about 99% of them are the retarded offspring of a joke fucking a scam. I do find it kind of fun, though. It's one of the very few spaces that's still Wild West and not regulated to death by boring governments and red tape and endless forms to fill in. Downside: things like Luna. It'll be regulated to death very soon and the party will be over.
You laugh, but I've seen hundreds of people throw money into that black hole over the last few days. Like, oh, it's gone to a cent, how much lower could it possibly go? (looks) $0.00003. Dead projects, like dead cats, don't actually bounce, but lots of people think it is worth 'a punt' for $20 or in some cases, $200.*
*I have seen people quote this as a frivolous amount to gamble for a laugh. I am clearly far too fucking poor to hang out with these people.