A portion of the population works in fields like psych where there is standard advice to use unlisted phone numbers to deter stalkers. Given 10 tenants, it is likely one has a good reason to make it harder to picture where they live.

No, it’s the 21st century reality of needing to protect yourself from insurance companies looking to spy on your house to set your insurance rates.

Literally hiding under a blanket: the day blurring out houses becomes widespread, they will just sent a human to look at your house.

That’s totally fine. They’ve been able to do that for 200 years and it hasn’t proved worth the cost.

Or use a data provider that doesn't allow opt-out and has no publicly available interface.

Good. That imposes a cost on whoever wants to look at someone's house and provides a disincentive to do it without a good reason.