>>18246752From what I've seen, there are a couple of reasons why so many people use Garchomp:
1) He's a good counter to Charizard Y, Talonflame, and MegaMom (with rough skin + rocky helm), and does good damage to Mega Mawile, and Tyranitar, if necessary.
2) He's really easy to put as an extra slot on a team since he doesn't really require any support. His Mega isn't used, so you don't really use anything by putting him on your team, and as I said before, he's a useful counter to many of the common threats.
3) He's really easy to set up disquake shenanigans with. Not saying it's a viable strat, but that doesn't stop people from trying it, and with Garchomp and Rotom-W both being insanely common, it's pretty easy to surprise your opponent with it.
So overall, Garchomp isn't really an insane meta 'mon capable of sweeping, but rather an easy to use counter to most of the 'mons that can sweep.
