If they can add Litecoin and Withdraw via USDT Bep20, then those will go with very low fees.
Litecoin?
LTC is already available on bet105, but litecoin has nothing to do with USDT. Note that the BEP20 you are talking about is for binance smart chain.
Most of the popular casinos already have these options to make it easier for their customers because $2 is such a big money that can earn you several spins in slot game.
As I already said in my previous posts, I requested a USDT withdrawal from bet105 a few days ago and I wasn't charged any fees for that at all.
I feel you misunderstood Pmalek's post.