I was considering upgrading to a nest smart home, but this has shown they don't care about customers. They have lost my trust and gained animosity... I won't give them a penny and I will discourage anyone from buying their products.
Just stick with basic thermostats and controls. Using these over-engineered devices will be a nuisance if you decide to sell your property or temporarily hand over control to someone else. Never mind the problems with cloud based vendor lock-in.