No the spammy results are when I search for something on google, it gives me a Pinterest link that matches my search term exactly, the link has absolutely nothing to do with what I was actually searching for and if you click onto it, you're met with a page full of random Pinterest crap for about 3 seconds before it busts out a signup wall in your face and to top it off it'll take you at least 5 clicks of the back button to actually get off the page. I find it happens a lot searching for tutorials for things.
ETA: to address the original question, I find quora annoying, but a lot less than Pinterest. I actually do get decent results when I can view a page. It just seems to be random whether it throws an account wall up or not. I find copying and pasting a link to a related question into a new tab will sometimes work if I close the original tab first, but not always.