Long ad breaks were real annoying on Twitch, I try to watch the same streamers on YouTube now if possible, since I have a YouTube family subscription (seems like avoiding ads on Twitch requires a subscription to each streamer?).
That YouTube is much better technically (e.g. immediate rewinding) is also a nice bonus.
Edit: I'm seeing now that there's something called Twitch Turbo for $12/month to avoid ads, though YT premium family still seems like a better deal as long as you have 2+ people for it, since you also get a YouTube music sub and, y'know, no ads on the rest of YouTube proper.
Twitch Turbo used to be Twitch Prime and was free with your Prime subscription.