It's both. And Messi is terrible at both the quantity of his runs and the quality of them.
He's a supremely talented old player who can barely move properly and wants others to do his job for him, so he can move where he wants, when he wants, doing his little "magician" stuff. Stuff that doesn't work except against La Liga cannon fodder anymore, because he is too slow, too lazy, and too erratic to impact the biggest games at this stage of his career.
That's Messi in near 2021.
We could talk hours about the stuff he does wrong in terms of movement. Nearly all types of movements that are in the modern forward's bag of tricks, really important stuff, Messi doesn't execute properly. And needs others to work twice as hard to somehow compensate for it on team level (often with little success).