I just tried an attended sysupgrade from 22.03.5 to 23.05.0, which resulted in 5GHz wifi not working. I guess its due to a driver not being installed. I'm still searching what I need to install.
[edit]
Fixed it. Installed opgk update ; opkg kmod-mt7915-firmware and replaced the "path" setting in /etc/config/wireless by phy wl0 and phy wl1.
I obviously have not much experience since I installed 23.05.0 just a couple of minutes ago, but at first glance the box is running at leasts as much as I need it for being able to fiddle around with it.