Is Bumble big tech ? No, still they have the same tactics than Tinder.
I'm not saying there is no problem (I have wrote several article criticizing Match group and the app dating market), I'm just saying this has nothing to do with big Tech. Any dating app (and some do) can do the same as Tinder
I'm not familiar with Bumble (I've never used Tinder either). My point is if you are controlling access to "the market" then a user being excluded could be a real disadvantage, and should be treated with care.