Alright since everything you have is "but its fun lolz" I'll throw an actual argument in here.
Imo C4s in general restrict the gameplay a lot, you're supposed to listen for a tiny beep in a game that has a broken sound system, chances being that the beeping gets completely blocked by a wall for some reason. OR you can rely on other people for information, but for most of the players on the server communicating like that is actually pretty rare. Usually you just see a "c4" in the text chat. Gee, how helpful.
I don't think gameplay like "hide an object (preferably in a spot that's unreachable by innocents), wait 45 seconds without doing anything, repeat" is good gameplay.
Now all this just gets amplified by the mass C4 spammers. It's an unfair playstyle that encourages camping, and I think it should definitely be limited.
waiting to see other arguments than "but broo its fun lmao!" or "but I PERSONALLY dont camp in t rooms planting 8 c4s per t round so it CANT be a problem!"