And don't interfere with the "back" button, either. Scrolling back to the previous location isn't what anyone intends when they press it.

Please! Maybe I'm weird but sometimes I simply want to reposition text on my screen. Just a slight adjustment, think eye level, so it's a bit easier to read and sites like this don't allow me to do so.

I agree and disagree. As a general rule, you shouldn't be screwing with the scrolling behavior, but in case like this (with a slider-type of interaction), it is a bit more understandable. What I can't stand is when people do it just to affect the acceleration/whatever of scrolling as a gimmick. This has some usefulness at least and doesn't affect my experience negatively at all.

Or at least use `replaceState` not `pushState`. I scrolled from the top of the page down one section and when I hit back it just went right back to the top of the page.

Agreed. Autoscroll breaks the mobile experience horribly. Small text... No pinch to zoom... Half the text is always off the screen in landscape...

I usually don't like forced scroll myself, but I have to say that I'm personally satisfied with the results of this site.

But I hear you and when the site goes from landing page to real website we will make sure to have a nice scroll experience for everyone :)