I think I have found the culprit in my case.
Discord updated its overlay to a more modern version. Ran wow without the overlay for 4 hours, no crashes. Enabled overlay and the game crashed after 10 minutes.
I’m using legacy version of the discord overlay now since a couple of hours ago and wow hasn’t crashed yet.
I also uninstalled and reinstalled wow before my test but I don’t think that had any effect.