I know this comes up but I haven't found a thread with recent enough information to be useful.
Niche-based matching has gotten genuinely more sophisticated. The question is whether the dedicated niche platforms have enough user density to be worth the smaller pool, or whether using the interest-filtering tools on mainstream apps gives you better practical results. The answer varies a lot by location and specific niche.
Would really appreciate honest takes from people with genuine experience rather than what the platforms say about themselves.