That is not totally correct. It works very nicely out of the Box if your NAS, and your network are stable (so it happens to be here).
Best is to have a decent NAS, and Vero + NAS hooked up to Ethernet. That’s how you’ll have least problems.
From experience, using autofs/systemd etc. is done only to handle the disconnects happening from time to time in WiFi enabled environment, or unstable network/server setups.
I didn’t read your post close enough, I thought when you mentioned systemd that you had used fstab (since fstab uses systemd). I had totally forgotten about the pure systemd method.
Definitely autofs is the way to go nowdays. I use it and it works great.
You could have used path substitution instead of re-scanning, but it’s probably cleaner in the long run to have done the scan. And it makes it easier in the future to add another device with a shared library.