I don't have a problem with ad-supported services in principle. But when an ad shifts position and size while loading, it's bound to get clicked in error. That is, I'm trying to select the first unread topic, and suddenly an ad moves under my finger/cursor and gets clicked. That is either intentional (to deceptively get clicks), or ignorant of basic html/css design. Ethical design has a "size" property that's "reserved" before the image loads, so that it doesn't shift while loading.
If we all used Brave, or ad blockers, there would be no ad revenue. The forum could not continue as a commercial endeavor without some ad revenue. Maybe that would be bad, maybe not.