I have them visible. Mostly because those are… just reading suggestions. I changed the title more general, though.
Some are using those kind of for doomscrolling, or browsing. It is matter of how titles of topics are worded to reflect that topic, and I and moderators, we are fixing those quite often (we have time, because we don’t have problem users or spam). Plus my active users know how tags are working and use those when searching something.
Most of users don’t search. That is a fact. They start a topic and then we do merging and/or lead to wanted direction. Or answer for question.
My weak point is suggested topics are extra content, that is not too often used. But again — on my forum those are decently accurate if there is related or similar content. So, my issue (well, that is not a real issue at all, but anyway) is it works similar way than an AI: it gives full amount of hits, even there isn’t any relevant ones; it has in-build force to offer something, because nil in not an accepted option 