PSG is currently on another level right now, and no European club has been able to match PSG's energy in the Club World Cup, so I believe they will defeat Chelsea and win the Club World Cup. Even without PSG dominance in the Club World Cup tournament, everyone knows PSG will surely have another excellent season in their domestic league next season because PSG has dominated the French league and built up a squad that's unmatched in the French league, which always allows them to win the French league title almost every season.
Forget the French league, PSG could still win the Champions League again next season if other European teams don't have squads as extraordinary or as strong as their current squad. Because PSG's squad depth is so mature and has changed significantly since Luis Enrique's reign, PSG's chances of winning the Club World Cup this time are also very high. Although Chelsea will also be fighting for it, PSG's current capabilities clearly surpass those of other European teams, as you mentioned.