for what i understood they will only delist the pair not the coin right?
That's what it looks like to me, and if true it isn't really a big deal. None of those coins are being delisted, and there probably wasn't much trading with those pairs anyway. It's a non issue.
I don't know if they have some 'under table' deal with tether ltd. I won't make any wild speculation here, I don't want to
It's also confusing for the newcomers when there a lot of similar usd stable coin pairs like usdt, tusd, usdc etc. Not really effective to trade with such low volume.. as the volume is separated and for me personally it's hard to take an opportunity to make some profit when there's a low volume.
Not likely that they have some sort of nefarious deal behind the scenes, but I would never rule it out. Binance is one of the few legitimate exchanges out there and I think they're governmentally regulated and thus would want to comply with the rules. I have never used a stablecoin but I suppose if I had to, it would be USDT. It doesn't matter how many there are, and it really isn't confusing even to a newcomer.
Binance was great when I was able to use it without going through the KYC process (live in the US). I gained even more confidence in them after they survived that 7000
BTC hack. Let 'em delist pairs all they like, because you can still trade the coins even though it might be a little more inconvenient.