Are children even reading the books anymore? [all]

I keep seeing all this discourse about how adult fans want XYZ but Rick won't do it because the series is first and foremost for middle schoolers, but like, how many middle schoolers are even actually reading the books nowadays? I'm 21 now, which puts me halfway between current middle schoolers and people who were in middle school when the original pentalogy came out, and when I was in middle school, I and seemingly all of my classmates solely knew Percy Jackson as those bad movies our teachers played when they'd already run out of curriculum but still had a week of school left. Has the series's popularity amongst its target demographic turned back around?