Yes, a public database like this would be acceptable. That way the info isn't paywalled behind some white pages site or similar. And then maybe I could even update my own info to be correct. Contact info is pretty much out there for most people already. Hell, I put it on my resume and send that out to many people and put it on public sites.

I am glad you want the world to know your phone number, but not everyone does.

Since we still use SMS as second factors (or primary, as some in this thread said they don't write down passwords but just use password reset links to login), it's not the best security hygiene