Yes i agree with that it's the very norm of things here in hong kong. If you attack a gym expect it to be razzed instantly. Even if 100 people are beating that gym with only 1 chikorita with 400cp inside that thing they can instantly replenish back to 6 pokemon in no time, because multiaccounters and other players will keep feeding the pokemon, and usually there can be a total of 500+ GRB fed to 1 pokemon.
GRB needs to be limited to 3 per defensive session because it's becoming into a plague.