I have never seen anyone praise or laud the benefits of scroll behavior overrides. It seems to universally be a negative if not hated, and always distracts from the content. Always.

And it required extra work to yield this negative behavior!

So how in the world does this end up happening? How could a team be so profoundly detached from reality? This site's behavior is so incredibly ill considered that I marvel that people worked on that, people approved it, people said publish, etc, without one person stepping in and asking what in the world they were doing.