Let's say MJ had made the NBA finals 3 times ... let's say from 1988-1990 ... and lost. (instead of losing earlier in the playoffs)
Would we think less of MJ if his finals record was 6-3 ? (I don't think we should.)
Yes we would. He wouldn't be the clear cut GOAT anymore and the aura of invincibility that he has to this day would be gone.
If he were 6-3 in the finals, he'd be 1 game better than Magic at 5-4 and would be tied with Kareem at 6-3. Suddenly Kareem and Magic would have much stronger GOAT arguments and Kareem might even have a better argument.