Best is not like Messi. Messi serves the team as equally as himself, but always looked for the best option for the collective. Best was no slouch at supplying others, but did so on his own terms - Messi would never have Charlton bemoaning him not passing the ball at the opportune moment for him.
Best is like Mahrez in an ultra state, sometimes he'll supply, other times he won't. Mahrez often had Pep wound up and perhaps it'd be less so with Best because he'd convert far more, but ultimately I believe Pep needs controllable players who don't contest his authority and that's just not the peak Best.
I guess it’s just a matter of perception, Messi is an alien, a half a level above best as a footballer no arguments there. But I think while Messi of course is w DDG ya my the greatest creator to play this game, there’s always going to be an element of selfishness with a player who dribbles as much as he did in his prime, it’s just that his so otherworldly that he’s the one player who can justify going on runs trying to take 3-4 players on rather than doing the more simple thing which is simply to pass the ball 5 yards.
Charlton wouldn’t bemoan Messi for passing hypothetically they were around in the same era and he played at Barcelona for example because it’s Messi and he was seen as a God like figure at that club, you’ll complain about him not making a simple pass and he’ll go and dribble past 4 players and stick it in the bottom corner.
Messi works by different rules than nearly every other player that’s played the game, and Rio had an interview recently with Boateng that illustrates that point, he barely trained hard, would be on FaceTime while the coach was giving pre match tactics and speeches and still go on to walk on the pitch and score a hat trick.
Back to my point I think Best is a similar type of player and talent at a lesser level, but as much as a maverick he was he was still a great creator still a a great scorer and still one of the greatest footballers of all time.
A better version of Mahrez starts every game for Pep, Mahrez himself as much as Pep could lambast him was a favourite of his also, he played more often than not in his latter seasons.