Presumably - if he’s looking back - he still exists. Why not both?
Commander/Admiral Adama was a great character. Sean Connery in the Rock was still vital.
SciFi is supposed to have a tad of imagination involved. If you can imagine other galaxies -but not any compelling or interesting older people in them with agency - maybe not as the action figure - but old Spock was still worth watching.
I keep seeing the title and think “unfortunately”. Then I re-read it and see fortunately. Yes he was great, but let’s get someone new in there. Why not?