The Ubiquity cameras are nice! They do offer remote access, which I used to monitor 3D printers and chickens from afar. I’m not sure if remote access comes with the cameras or requires their “cloud key” device, which we also have.
There’s an ongoing migration of ubiquiti video hardware to “unifi protect” which requires their hardware NVR (cloud key gen2+) to run. Of course remote access is possible, but you can’t self host the new software (at least for now).