I was actually acquainted with Grindr long, long ago. My good friend and roommate in sophomore year used it very frequently and had a revolving door of men coming in and out of the apartment. The difference of course is that Grindr serves a purpose in the gay community that it doesn't really in the straight community (because the baseline assumption is that everyone is straight).
I'm a big fan of online dating usually. Like OkCupid is great. I think it's a much better way of dating that meeting a stranger in a bar and finding out like two weeks later than you're totally incompatible on something. But Tinder is just weird and creepy.
If Tinder was a poster would you support banning it?
No, of course not. I would befriend him and defend from you and the rest of the ban brigade.