It’s more that they have a core group of 16-18 or so players who don’t lower the quality of the XI which ever combination play + a few talented young players to supplement that group. Those core players still play a lot of football and because they’re so integral and so good they’re happy being rested for a game or two or worked hard.
For example last year 15 players played 30+ games. The senior players who didn’t were Laporte who played 24 times affected by injuries, Cancelo played 26 times before being shipped out and Phillips played 21 times because Pep hates Leeds scum. The squad has just been managed so well and when you have a great squad you can keep doing fine changes each year whereas a lot of clubs are doing massive changes year on year to try catch them.
Guardian Football Weekly covers PL most of the time but also has European and EFL episodes. Also like dipping into the BBC Football Daily - the Monday Night Club edition is up there for me as well but good to catch up on their 5live coverage after games too.