Choosing Kvaratskhelia over Osimhen is a bad move for PSG. I don't want to say anything about his talent, but he is not a good fit for PSG. I think Osimhen would have contributed much more to PSG. Manchester United or Chelsea would have been more beneficial for Kvaratskhelia. He could have proved himself in the EPL but he chose Ligue 1, perhaps for the money. Kvaratskhelia is a footballer with great talent but I think he lacks stability and he is not mentally strong. He should definitely go to the EPL. Because he could prove himself there and eliminate the stability problem.
In as much as I know that Victor Osimhen is currently one of the best strikers in the world at the moment, I disagree with your objection that Paris Saint Germaine's decision to try sign Napoli attacker Kvaratskhelia ahead of him was or would be a bad move for the French champions. Recently, there was a report that revealed that Paris Saint Germaine during the last summer transfer window made a huge offer to sign both Victor Osimhen and Kvaratskhelia on a permanent deal but was rejected by the management of Napoli so if the French champions now decides to go for Kvaratskhelia alone, I think there are factors that must have influenced such decision.
When it comes to transfer of players, there some parts of the deals they usually hide from the media and until they're disclosed, you wouldn't know the main reason behind some of the decisions. Kvaratskhelia is an incredible attacker and would make a good signing for Paris Saint Germaine if you ask me