Hi @starbright nothing at all wrong with thinking ahead; I just had the sense we could not see your real issue.
With the subject of connection to the internet of things, it is more clear.
I would not recommend /e/ over Lineage + MicroG and TrackerControl to firstly learn how “dangerous” this might be! If you have the skills to achieve this with root, and you hoped that Advanced privacy might help, I would suggest you delay the move right now.
I really cannot see how this could be free of hazard using a mobile phone.
Edit, inspired by this nice post, Connecting /e/ to the "internet of things" - #2 by smu44 I would add that I think that the security of your Android mobile phone is going to be in the hands of your home “hub”.
If that is already handed over to an “untrustworthy corporate name”, I would not be happy to connect my mobile to it.
A hub where you already control security (like a Raspberry pi for instance) I would be more happy to experiment, on the basis that the necessary data sharing is being done by a discrete protocol.