Even some merchants and vendors have dumped Bitcoin in favor of other cryptos. Most know of the STEAM example.
they stopped accepting bitcoin but not for other cryptos, they are not foolish enough to add another altcoin that nobody even uses. it is not worth the hassle.
and in case you missed it, steam was using bitpay to accept bitcoin payments and bitpay doesn't accept any other altcoin so that is a no no right there
besides I would love to hear your thoughts. for example what altcoin do you suggest we start using? and please explain why and also how that altcoin has solved the scaling issue of bitcoin?