That is true. It won’t turn the cameras on or off. But you can then create routines to do that task based on alarm status. My point is that it gives you the effect of a true alarm system. It will also integrate your siren for you.
The example HBR pointed out is also why arlo pilot is good to use. The modes we can configure in the Arlo cloud are much more complex then what is doable from smartthings simply leaving the arlo cloud always armed. One of the big things smartthings does not manage for arlo is the notifications. So for instance if you want to configure your outdoor Camara to do one thing while your indoor camera’s do something different with different notification profiles then the arlo modes is the only way to accomplish it. In actually have 3 modes my cameras use. They change based on my ADT Smartthings panel switching between disarmed, Armed/Stay, Armed Away. On all 3 of the arlo modes my front door camera sends notifications for anyone approaching my door. Because it is outside I connected power and setup activity zones to prevent false positives. When armed in armed/stay my indoor cameras are active and record based on action. Armed Away notification from everything. I integrated my arlo siren into the ADT Alarm part, which was done outside of both.
There are also a few arlo smart apps that will trigger recordings for you based on other events outside of arlo. I can direct you to them if they are of interest. I have created a few and @evanbeek created the original app that my alterations came from.