What would really make you feel uncomfortable is there is near 100% probability that there are electronics controlling your physical access to buildings you use on a daily basis. Maybe not your home, but other acess.
And the most important thing(s) that any experienced HA automation geek knows is:
1) Always have a manual way to control a device if HA goes down.
And the most important thing(s) that any experienced HA automation geek knows is:
1) Always have a manual way to control a device if HA goes down.
2) Local only, no cloud.