Definitely not off topic for a site full of engineers and designers. It is a huge pain to navigate, especially when you get to the 3 bulb types near the bottom and as you scroll you accidentally hover over one of the bulbs.
Not just you, it's annoying to have scrolling behaviour taken over by the website. Also, scrolling down != changing page, but their js is treating it as changing pages, so the back button is broken.
I think it's that annoying because there is a mismatch between your intention (scrolling the page incrementally) and its reaction (moving to the next "slide"). It acts out of your control.
