Thats usually used for if you need to install apps or transfer files from another device using USB.
Quest 2 is simple, you just download deo vr or any vr players directly from the quest store, and theres a few vr apps that will let you stream videos from your computer to your headset. No sideloading really needed. And they changed how to make an account, use to be you needed a fb account but not no more, you just sign up with an email.
Only sideloading I ever done and l very rarely do is with sidequest if I wanna download a game or something which I hardly ever do.
Imo, all you really need is deo vr if you wanna stream from slr or other studios. To keep it simple. 🤷♂️