https://news.ycombinator.com/newsguidelines.html
(Note: I'm not saying such things aren't annoying—it's the opposite—which is why we need a site guideline to prevent discussions from being dominated by them.)
Just weighing the pros and cons here:
Pro: People who don't have smooth scrolling mouses will suddenly enjoy smooth scrolling on this website. Even this is a questionable "pro". Most people have scrolling setup how they want it and don't need it fixed on a per-website basis.
Con: Degradating a core function of the computer (scrolling) for people who already have smooth scrolling.
So to summarize: The plugin is not helping anyone read the blog, but it is preventing/annoying many people from reading it.
These moments were two of the first wherein I strongly reconsidered whether I had made the right career choices.
It is infuriating because this is solveable in many ways, the simplest being not to push during a mouseDown event.
But my new most hated thing is Google lazy showing details when I mouse over a result. Which means if I quickly go to click on the second link I mouse past the first link and it expands to the space where the second link was, so I either click the wrong link or have to reorient and then click the second link. I can't imagine how or why that feature exists.