That is correct. It is also only the older cameras up to the Arlo Pro 2. That means the Arlo Q, Arlo Wirefre, Arlo Pro, and Arlo Pro 2. Be careful if you think about using the free storage. They have recently released the new essential cameras and they don't use better specs then some of the older ones, but don't have the 7 day free storage. Many folks worked around that by creating multiple accounts and then just sharing from one to the other. The key with those older cameras is that now i don't think they are easily found, and their hubs don't allow easy access to locally recorded video if they allow local recording.
If you really do start with arlo look at getting the Arlo Pro Ultra kit for the most powerful hub. Then get whatever extra cameras to add to it. Something else to consider is that generally speaking a hub can only allow recording from 5 cameras at once. That may mean you want to get more then 1 hub if you will have more then 5 cameras.
The integration method I used for arlo can be found at this link.
Node Red with Smarthings using Samsung Automation Studio
The biggest advantage I see here for Arlo is that it is all first party supported from arlo. There are probably several ways to do what you want but Arlo can provide it all.
Arlo does provide some enhanced function with their cloud service. Basically it is effectively $3 a camera up to $10 when you go to unlimited cameras. That activates things like package detection, AI detection for notifications, Enhanced Action zones, and some E911 stuff. It will also augment your recording access to improve ease of access.
