I think all clients i had from bitcointalk prefer to use bitcoin to buy services / products they needed ...
Not a single client that i had until now used altcoins like ethereum ,litecoin etc or tokens like usdt,usdc ....
Why do you think people don't like to use altcoins to buy things on the internet ?
I even see some companies making use of bitcoin and none of them mention altcoins. Ethereum is very fast when it comes to transaction and I got to know about that when my friend suggested that we try it out, and that was my first time experience, and I only used it twice and still switched back to BTC since that’s the regular.