Why did Pope Francis raise the minimum age for being granted 'Monsignor' from 35 to 65 years? 'Monsignor' is used for priests who have received certain specific honorary awards or who hold certain offices.

The grant is subject to the criteria of the Holy See, including a minimum age, which Pope Francis raised from 35 to 65 years.

My question is: Why did Pope Francis raise that minimum age from 35 to 65 years?

Also, did Pope Francis revoke that title to priests who have been granted before that new rule and who are, at that date, less than 65 years old?
To avoid carreerism. Young priests turning into monsignors can get really proud of their nobiliarchic title.
No. Current monsignors keep being monsignors.