Really bad drain on Pixel 9P
I bought a new iPad Pro M4 last year and have been struggling with this as well. That device had miserable battery life compared to advertised unless I was in airplane mode, and I saw that HA was the culprit.
Oddly, I don’t have this problem on my iPhone 16, despite having background activity turned on for presence detection reasons. What the heck? I’ve gone over both settings and the iPad has less enabled but more drain.