Good ideas mate. And this is how I use Smart technology / IOT, I don’t rely on a single device I have it supported by at least two devices often different devices.
Therefore if I get multiple alerts from devices monitoring that area I take action.
Some motion detection works differently some on heat signatures, some on body mass, some on pixel changes and some on other things. But I find using multiple protects my property in line with what I want and those of people I help set up or help consult on.
And my advice if you want an all singing all dancing security cctv system you have it fully wired and installed by a professional company. But that costs much more money than what customers who buy IOT cameras want to pay - yet some seem to want the same level of operation.