I also meant to add:
My particular doorbell does not have PIR, so I actually like the option of having
Blue Iris trigger a motion-detected
chime even when the doorbell button is not pressed, because most delivery drivers do not press doorbell or even
knock anymore.
To be honest, since I installed a video doorbell I have noticed that nobody seems to "ring" the doorbell anymore.
They either knock or typically just stand there. It is as if they assume with a video doorbell that their presence has
been detected.
Lastly, don't forget that the accessory VTH monitors will "ring" if the doorbell button is pressed.