I had an internet connected baby monitor. In the end we decided to just get a local RF one and it is a far better experience. Pair it once, and it just works. Lower power. Very reliable. Coverage throughout the house without issue. No apps to crash in the background. No dropped streams. No needing to log in to the app. No worries about features getting taken away. No subscriptions. No having to send data out to the cloud just to pull it back down. Lower latency. Far easier to just hand the display unit to the baby sitter instead of trying to talk them into installing an app and sharing a login.
These days the local RF ones are very solid. Modern DECT-based systems use encryption and frequency hopping so once paired you're not realistically going to get someone listening in.
The only benefit I see for these cloud connected cameras is if you're out of the house and are going to check in on the baby sitter, but in the end I'm not even a big fan of that feature. There's tons of pros for the local RF ones and few negatives, and mostly a bunch of unknowns and concerns with the cloud ones.