Yup it is true.
I didn’t install the sage doorbell until it was supported with in HE but I had purchased it based on this thread so I knew alternate drivers were out there.
I wasn’t sure if it was my wiring or not. I have a pretty old gear driven four chime door bell and I had to add a cct to pulse stretch the doorbell press so initially I thought it was my fault.
Connecting it directly to the transformer would get it working and by the time I reconnected it to the doorbell it would work once then nothing. I mean how hard can this wiring be?? It’s a doorbell !!
Anyway, tried the other driver and bingo.
Tried the built in driver again, hit config, worked a couple of times and nothing.
Went back to the other drive and we were good to go. I never looked back.
One of my biggest gripes with the internal apps and drivers is you don’t have any visibility. I’m not opening the can of worms again but just saying.
Same reason why I do not use HSM for my leak sensors. It don’t work after being disarmed once so I wrote my own rule to handle them.
Some day I will figure out how to write apps but that hasn’t happened yet.