Ok, I think I found the culprit. I have electrum_server running and I didn't even remember it. And that's what the ps -ef returns. I guess I have to set it up accordingly to use the correct RPC credentials.
So, I can assume that nothing is actually wrong with bitcoin core, right?
Other than be running behind Tor by default and that in this situation that parameter score from getnetowrkinfo command, seems not to change, everything seems to be working as expected, I guess!
Yep, looks like everything is working as expected.