I feel that the second Red Bull seat is more of the meat-grindy experience. Racing Bulls is the chef who takes the ground meat and forms it into an F1 driver-shaped patty. Like a Red Bull McNugget of a driver.
I think that's what the comment means. But still I think it's not only on them. Liam publicly and very very probably internally massively lobbied for him getting that seat rather earlier than later. I mean, sure, no one would say "no please let me learn first", but it's IMO not 100% on RBR.