I used it for a long time and in the last few months has completely broken, leaving me unable to load Wikipedia at all without disabling it.

They started pushing "AI" based crap into it at the same time.

The structural choices they made with the new layout broke other tools ability to summarize and excerpt articles as well.

After month of breakages and AI marketing ads BS I gave up and moved to Modern for Wikipedia. I would recommend you do the same.