I’ve been using it for a long time after going through the manual setup struggle. I’ve not had any issues other than when IFTTT restricted the number of routines you can have on their free tier, which obviously has nothing to do with the integration.
My only gripe (other than wanting more GA functionality) is that I assumed that using the room variable on entity_config would automatically assign it to that room in GA, but that doesn’t seem to be the case.