I would like to think that people are smarter than that, and that most new players would at least choose to check it out for themselves, but of course there will always be a few who believe the hype.
As I see it the greater risk is that of confirmation bias. If someone goes into Solo for the first time expecting a ganker's paradise and is immediately ganked, no matter how small the probability or how unlucky they were, then they're unlikely to give it a second chance. They'll just believe that all of the rumours were true. And, perhaps more damaging for the game, they may default to believing any future rumours from the same or similar sources.
+1 QFT
For me, a lot of my avoidance of open now boils back to the forums.
Not the odd thread started by someone who played open, was pirated (properly) and is now throwing a hissy fit calling it "griefed". (Those threads make me laugh)
But the attitudes of some of the most fierce open advocates, I don't want to waste my time in game on them.
When the same few people can seriously say;
Open is empty, we should "encourage" people into open,
The modes should be locked because switching is
cheating,
Open should be paid more because
all the players make it more risky.
So, using a clear lie (the middle one) and a contradiction (top and bottom cannot both be true) to push an agenda - as if we are all dumb enough to actually fall for it. Sorry, but they are people I'm not going to play with.
(And
I'm not pointing fingers for the above, but using my links in my Sig you can figure what advocates have used all 3 lines (or similar lines) as their reasons to mess with Solo / Groups)
Now if forum accounts were linked to game accounts, and I could just block people from the forums and ingame in one go - I personally would never have a reason to use Solo or private groups.
But as the block feature in this is borked now (you have to friend someone to block them - FD ???) and you can only chat block them, I'm really not going to bother putting myself in a situation where I may run in to them.
And while I could use other methods to deal with people I don't want to play with, I don't see why I should have to mess about. None of my other games make me mess about to avoid people I don't like.