I said it about the Patriot Act and I say it about this.
That's a judgement call to which people will have different reactions.
One way to look at it is to ask if there are other mechanisms to accomplish the same/similar goal, then ask which of these mechanisms is most aligned with our values.
A recent Lex Fridman interview of Po-Shen Loh [0] covered a privacy protecting NPI approach. An interesting aspect of the approach is that it works with people's self-interest of taking steps to stay healthy instead of attempting to work against people's self-interest in not being quarantined.
I mean, if we're in favor of universal health care where, by some rhetoric, we're forcing people at gunpoint to give their money to save others, why is this so bad?
As for heart rate and temperature, having this info over time can show:
When were you sleeping, active, potentially emotional?
When did a woman ovulate? Is she pregnant now? Did she have a miscarriage? Or maybe an abortion?