Perhaps. All I'm saying is that they have good content. Give it a try, you may be surprised to find you like it. Even if they're on an implosion trajectory, Internet Archive will make sure most or all of it stays online. So it won't be a failure if you measure success as "generating positive contributions to the world" instead of dollars.
"You agree that this license includes the right for... Quora to make your Content available to others for the publication, distribution, syndication, or broadcast of such Content on other media and services..."
"If you operate a search engine or robot... Quora gives you a... revocable... license... You must follow robots.txt at all times"
"We use these automated technologies to collect and analyze certain types of information... Quora itself does not respond to do not track signals"
"Quora agrees, in the performance of this agreement, to keep non-public information furnished by [government users] in the strictest confidence"
Especially since they are eternally at risk of disappearing, I'm not too optimistic about Quora in the long run. Their competition is doing a lot better.
Question really is will. And IA respects robots.txt. Which is very reasonable given that they operate within a quasi-legal domain in which it's best that they don't archive anything that the archive owner doesn't at least implicitly want to be archived.