Finding a useful site on page 2 and beyond? Good luck!
I've switched to DDG half a year ago or so and haven't looked back much. I only once in a while use the !g bang and almost always come back disappointed.
Sure, there are also some spam results on DDG (and probably there are going to be many more once it gains more relevance to be spammed) but for now and my searches i exclusively use DDG on my private computers as well as at work...
So, to summarize, i think the relevancy of Google as a search engine will, imho, continue to drop and also the perceived "truthiness" of statements found thereon as well.
To add, i also don't necessarily think of this as a "Google" problem - the same people that will believe in a statement gathered from a quick search will also believe in the same thing when they see it in a Facebook post, Whatsapp chainmail or whatever....