> “I guarantee that every single person who liked and shared that post about bringing Instagram back to what it was, would spend way less time on Instagram if it reverted back to how it used to be,”

This is what I also think. People (or, the mass of the users) keep following users that posts a lot of videos, they watch a lot of reels and like those... So instagram is doing the correct thing (for their goals of keeping people using it) in focusing on reels.