I'm out of the loop. The answer that references "one person's personal opinion" is from 2017, and the context it links to is from 2016. Surely things have changed since then, right?
.. Right?
(I'm genuinely asking, I've got no idea)
Edit: I just checked on Linux Mint 21.3. It's still on the same version as back then, 0.105. Well, Debian is nothing if not sable!
Mint 21.3 is based on Debian Bookworm (via Ubuntu 22.04, not counting LMDE of course). I don't know what you're looking at and I also don't fully know how this works, but what you said doesn't seem to be the case.
Very well, you seem to definitely know this stuff better than me! I based my comment on this answer and getting this myself on Mint 21.3:
$ cat /etc/debian_version
bookworm/sid
But reading a bit closer, I think this is the key part:
That's how, for example, Ubuntu 20.04, released in April 2020, can be based on Debian 11 "Bullseye", which was released in August 2021.
So Ubuntu probably pulled Bookworm before it was released, and before it upgraded policykit. But it's still to some extent based on Bookworm. Does that sound right?