In any normal case i'd agree, but Quora is just a straight out terrible place to share stuff because it's essentially a paywall. (paying with money or a registration doesn't really make a difference for this situation).
Woah it seems that it no longer requires a registration to see all of the answers. Not sure when this changed.
I think it changed when Google started enforcing that sites can't present different content to Googlebot (to show up in results) then live users (to try and make them register once they click through).