Earlier quoted context omitted.
I just tried it on this webpage, and you’re correct! I really dislike behavior like this that is useful to a few people but is far more likely to be encountered accidentally and feel buggy.
I like it and use it all the time and many people I know also use it a lot. It is not as good for text that is most relevant on the bottom (e.g. text messages) but really useful for webpages, etc.. Some apps implement some logic to scroll back up when you tap it again (Apollo comes to mind). The only disadvantage is that many users do not know about this feature (because there is no indication that the status bar tab…
Precisely why this behavior should be considered unfriendly. It's not intuitive and is prone to accidents by the vast majority of the target market.
Even just making it a double-tap would make it drastically better, and double-taps are closer to convention as well. Double-click the left or right arrows in an overloaded tab bar in Firefox on desktop, for instance, for it to scroll a full row over.