I'm actually not sure. I'll need to get a USB C adapter or USB C thumbdrive to test. If you have one, can you try manually typing in the path "/mnt/userdata1" or "/mnt/usb_storage" in the file explorer and see if it works? It might also be located under "/storage/xxxx-xxxx" where the x's are the drive's Android ID. Not sure how to look up the ID, but you might be able to get it with ADB.
Viewing post in External Drive support on Quest 2?
Maybe I'm out of the loop but last I checked they disabled OTG storage on the OS years ago, update 20? 21? 25? Something like that. Someone asked John Carmack about it on Twitter and he said the drivers might've been stripped from the kernel to save space, said he might look into it, but has he? I haven't checked.
It was Fat32 only back then regardless and unless they're on Kernel 5.7+ I doubt they've went out of their way to add NTFS or exFat support; just get a Raspberry Pi 5 or something and host a Jellyfin or miniDLNA server or SMB or whatever.