We don't need this, if the server you're on can't handle it then don't play on it. If the owner of the server wants to abuse it then that's his choice not yours.
This is loving stupid
Unless you want an actual aimbot to use in deathmatches (which this is
not made for, go elsewhere if you want to cheat), there's no reason NOT to restrict it to a specific tool
And if you're using it for filming (which is what this
is made for), then having it restricted to a single tool won't diminish it's usefulness at all.
In fact, doing this will add a lot to its usefulness, because you don't need to fill your (already extremely full for many people) keybindings up with even more bindings, just click with the tool out, and you don't need to restrict it to admins only
Garry's mod has a camera tool which does exactly this, and it's used pretty widely and no one ever complains "WOW WE SHOULD HAVE THIS FEATURE FOR ALL WEAPONS RESTRICTING IT TO ONE IS STUPID JUST DON'T PLAY ON SERVERS IF IT GETS ABUSED"