Pretty much can any high level player actually play well in the playoffs against good teams and actually good defenses.
Very few (LeBron, warriors players, Giannis, Jokic, Durant, Taytum) have demonstrated they can with consistency.
Lots of players are good in the regular season when a lot of the teams are mid or suck, very few step up when it matters and they need to take over (ex. James Harden, Chris Paul).
Upcoming players will be eventually be judged by the same standard because end of day - NBA is a league of superstars.
As a side note - I'm kinda surprised to learn he's only 23. Dude is not aging well.