This is commonly repeated but I don’t think it has any basis in reality. Dating apps compete. the one your friends tell you they met their partner is the one you sign up for.
That's also survivorship bias. My friend met his GF at a sports-group. I've been going to that sports group for a year and didn't meet a GF. I met my ex-GF in a coffee shop. My friend has been going to that coffeeshop for a while and didn't meet a GF.
There's too much randomness in dating and variance between people, to draw conclusion that just because an app or social place/group worked for one person it will bring results to another.
There's no sure thing in dating apps, otherwise everyone would be on that one app and stop going out altogether if it were that easy to find a partner.