Winning the UEFA Champions League against Inter Milan didn't seem to be a fluke as PSG's play at that time really made them deserve it.
With another win over Real Madrid in the FIFA Club World Cup semi-final, I agree with you that Paris Saint-Germain are now the strongest team. At least if they win again in the final against Chelsea, they will be the strongest team in the world for the 2024/2025 season. The 2025/2026 season will be challenged again.
PSG is now the team to beat in world football currently because they are playing in a different level many people thought that the win against inter Milan in the UCL finals was due to the fact that inter Milan team was old but it's clear now that it was not due to inter Milan team but because of the quality of the squad that PSG has
The final round will see whether Chelsea is able to be the team that stops PSG, because if we look at Chelsea's game, it seems unable to withstand the pace of PSG who appear in an ever-increasing graph. That is, PSG's game is always difficult for other teams to guess even though these other teams have watched the matches they play.
Take a look at PSG's win over Bayern and compare it to their game when they beat Real Madrid. The two matches are not the same.