Close to my view, except on whether the ratio is workable in your area.
If you only test one thing on bbw singles, make it whether people reply or just collect matches.
Took me about 5 weeks on bbw singles to work out that the real question was how thin the pool gets outside big cities.
If you are only browsing, the service is fine. The moment how well it holds up once the novelty fades matters, it changes.
After a few weeks on bbw singles the only question left was whether it thins out after the first week.
Reply rate on the platform roughly doubled once I stopped leading with a compliment, though whether the filters survive a refresh never budged.
Breaking down what I actually checked on bbw singles: