The rate and experience of rejection does not seem to be symmetrical across the sexes by a significant degree. Of course nobody likes rejection, but this point doesn’t really advance the discussion.
They were responding to "women are worse at handling rejection", and if they disagree with that (as I do too) then it is advancing the conversation to say so, even though it doesn't advance a part of the conversation that specifically explains dating app use.
Men handle rejection poorly, I’ve seen it, as I’m sure we all have. Weeping, drinking, wallowing in self-pity. It can get bad.
Women handle rejection with anger, resentment, and vitriol towards the rejecting party. So much so that I’ve seen people get married and divorced because the man was basically bullied into sticking around, and she left in the end anyways. Happens all the fucking time.