Hah never thought I'd be compared to that legendary comment! It hits home for me because I worked at Dropbox for years. I did at least qualify that I couldn't in good conscience recommend my setup to non-techies :)
If you don't want a baby camera system that's also a part-time hobby...Nanit does seem like the best option. I just lament that the best option requires giving up so much.
Don't worry, I also use Ubiquiti, and self-host Home Assistant on my TrueNAS :)
I have a little server rack cobbled together out of wood under my basement stairs, with a UDM Pro, 24 port POE switch, and an ancient Dell 2U poweredge for TrueNAS.