Bit ironic that you don't seem to have read my comment properly.

Firstly, you missed the caveat about the example used being anecdotal.

Then you seem to have missed the bit about reports suggesting functional literacy is decreasing.

A quick google:

https://hechingerreport.org/americas-reading-problem-scores-were-dropping-even-before-the-pandemic/
https://hechingerreport.org/proof-points-why-reading-comprehension-is-deteriorating/