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For you to say if Chelsea and PSG are going to be playing the final game of this competition, it will be as if newbies and professionals are playing. That shows how you underestimate Chelsea, and that is not totally true. Just because PSG are in good performance does not mean Chelsea will be like newbies while playing with them. No one argues with you about PSG, but saying Chelsea will be newbies while PSG will look professional in this game is what I totally disagree with.
However, just the way you said PSG are now a beast and not the PSG we normally know, I can tell you that Chelsea have also improved in performance recently.
Rather than completely underestimate Chelsea in the final, I'd give them a 30% chance of winning. Chelsea have a good, competitive squad, but their performances haven't always been up to scratch. Improvements are always a priority and they've done just that, but facing PSG in the final won't be easy. PSG's chances of winning the title are very high - that's worth it with the performance they've shown so far, but anything can change in 90 minutes.
Let's see what happens in 90 minutes - we all need to be entertained. I don't want to see PSG play as well as they did when they beat Inter in the Champions League final or beat Real Madrid in the semifinals - the final should be more thrilling.