So the rules say that mouse wheel is banned, and this is so you don't bind grab to it and make levitating very easy. I was wondering though could I bind zoom in and out to mouse wheel? I don't have it on PC yet, but once it's on Steam I'm going to get it. So I was just wondering if you bind it to zoom in and out would it still be banned

Until a mod says otherwise, the reason wasn't to ban the mouse's scroll wheel because of the drop grab bind, it was because no such thing is available on the Nintendo switch and gave pc and mac users an advantage.

You can change your settings for any button/key from hold to toggle. I'd recommend changing your zoom buttons to toggle. This is what I do, and it's a life saver.