I think that Christopher guy isn't the smartest guy out there.
The fact is, PS5 was up ridiculously high last year because supply was finally meeting demand. Its also a fact that being down 30% from a time you were up 200% is not doing badly at all.
The other obvious fact is that the PS5 is still not just expensive, but costs more than what the PS4 cost at this time launch aligned. It's kind of silly comparing sales of two consoles, launch aligned, and not factor in the price of those consoles.
What these sales declines are showing, is how badly Sony needs to drop the price.
Lastly, I think people need to be a tad bit realistic here, or at the very least factor in all the context. The Switch is due a successor, its sales should be down year to year. The Series X is a failing platform, and the PS5 is down from a stupid high perch last year and has still not seen an actual price drop since launch. 4 years in.