I have a number of Apple Time Capsules (AIrport Extremes with disks in them) which I have tried to upgrade, and failed, a couple of times. One time because the access points I tried incompletely bridged from wireless to wired network and this broke all the Bonjour/mDNS services that needed to cross wired to wireless (looking at you Google!). The other one I tried was Synology’s mesh kit - but that was slower than the Airports.
Sadly it looks like I will need to start planning on replacing them soon. Apple provides a utility to configure the Airports (which I dislike - I much prefer having an on device HTML based config). I hit a bug on an M1 mac running Ventura in the utility. It no longer allows long WPA Personal passwords -stops at 32 chars. Mine is 33… I know it’s bit rot - old application starting to fail on new versions of the OS because I am able to set all 33 chars using Airport Utility on an Intel Mac running Catalina.
Ah well, the time had to come. Need to dive into mesh access points again.