@Dailahn0
Hosts are held to high standards by the Airbnb algorithms. Pre-approving apparently is registered and positive and favors visiblility. So if I get an inquiry that I don't really need more information from and feel I can accept a booking from, I'll pre-approve.
If I still need an answer or clarification to help me decide, I won't.
I've heard and read that guests like pre-approvals because their booking is one single click away, and they like having a choice of pre-approvals.
I've had a number of guests who inquired and actually wanted to book with me and appreciated my pre-approval as sign of confidence.
Go figure... there's no wrong or right way...