I tend to agree. Grimes does the “clumsy” very well. The Dusty & Grimes fines were warranted. Can’t comment on the other 2 as I haven’t seen replays.
What's the point of a fine though? It's obviously not a deterrent so I don't really get it. I wish the AFL would stop being wishy washy. If they believe a player's action was intentional and bad for the game, suspend them, if not just get on with it. It's just a revenue raiser. It's pointless.