AFAIK you can have roles which have access to different parts of your server. Thus you can have that all newly joined accounts have a role where they only can see and interact with a channel for those waiting for acceptance. You can even make it “fill out a form in a thread” for why they want to join, and only after they’ve been accepted will they be given access to the rest of the server (or just some of it)
A true grammar Nazi would obviously know that it is a proper contraction. No true Scotsman and all that ;P