This is indeed far more of a "HN Style" comment.
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.
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.
My definition of "trivial" seems to be different.