It used to work like a charm for me, but suddenly I've started getting advertisements on the streams again, I tried to watch a stream earlier and still got some dumb samsung phone ad instead. Even after updating this still occurs.
It also doesn't auto start for me anymore, I have to manually click the twitch5 icon every time.
EDIT: Yep, literally every stream I try to go to plays an ad now.
EDIT2: It's another change that twitch made with their preroll ads. Look twitch, I don't hate all ads, just the cancerous preroll ones.
EDIT3 if people were using this for ad blocking, consider this. https://github.com/instance01/Twitch-HLS-AdBlock