I'm not talking about Solana. ethereum L2s like arbitrum (my favorite obviously lol) are growing very fast and almost all exchanges accept them now. would bring more traffic wouldn't it? bridging from a l2 is now is also extremely cheap
There are literally dozens of Ethereum L2 and, personally, I don't see why arbitrum is better than any other (Base, Linea, polygon, OP, zksync, blast, scroll, etc etc) ...
Some exchanges accepts only USDT on mainchain, like exch.cx and bitstamp, for example.