OpenSSL 3 is in Ubuntu 22.04 LTS [1]. I expect that alone to be bad enough.
[1] https://discourse.ubuntu.com/t/jammy-jellyfish-release-notes...
[1] https://discourse.ubuntu.com/t/jammy-jellyfish-release-notes...
Source:
Oddly, they say it is in openbsd. I thought they moved off openssl years ago. (It might be good to take the other things I said with a grain of salt.)
I don't know if any other ports use it; they try to make them work with LibreSSL, but maybe a few ports use OpenSSL 3.