It's not a problem from security perspective. It is a problem from privacy perspective.

Privacy is security.

"Security is the degree of resistance to, or protection from, harm."

"Privacy: a secret matter."

"Privacy: freedom from unauthorized intrusion."

"Privacy: the quality or state of being apart from company or observation."

So you see, privacy IS security.

I can't tell if you forgot /s?

> It's not, it's a "public" key

Not just any public key, it's your public key. It identifies you.