If only this were a law. I can't stand when sites play "hide the scrollbar" or "find the hover sweet spot to display the scrollbar" and I click on where I think

If only this were a law. I can't stand when sites play "hide the scrollbar" or "find the hover sweet spot to display the scrollbar" and I click on where I think the scrollbar is and instead click on a link that's was two pixels away from where I thought I was clicking. How is this accessible? Edit: How does this improve the user experience?