The couple of streamers I watch regularly, all post thier streams to YouTube the next day, so I watch there. I do still have a twitch account, so I can use the free sub I get with Amazon prime to sub to one of them. Not much, but better than nothing, as they don’t have a patreon account. A secondary reason for maintaining that twitch account is to reserve my particular username, just in case.
In terms of twitch chat and/or interactivity, I just could not possibly care less. I use FreeTube for all of my YouTube watching, these days, and I keep comments completely turned off. On the rare occasion I do actually watch something live on twitch, I have chat completely hidden.