I totally agree and think cuddling is fantastic to just relax. I just don't see it working on something like a dating app where it would be near impossible to know if either or both parties could separate feelings from the whole ordeal and just enjoy it without an expectation.
It's why cuddling works so well with a significant other; you can do it with no pressure, no expectations, have trust, etc and just enjoy each other's company for a bit. Much harder to do with a stranger.