I don't care if I go to a friend's house and he or she has an Alexa or Home or what-have-you. Their house, their privacy, their rules. But we're keeping them out of ours.
(Yes, both of us have disabled Siri and the utility of a mobile phone existing and being indoors with us is higher than the seemingly unlikely trade-off of Apple listening all of the time. "Unlikely" because that's not their business model, so far as I can tell, while All Data Collection Everywhere Always does seem to be the case for Google and Amazon.)