The "solo" crowd are the ones complaining, and the PvPers are shouting GIT GUD
Your whole post is invalidated by this assumption. The difference in attitude has nothing to do with PvP vs PvE, hardcore vs casual or any of the other straw men being constructed to skew the argument. The difference is that some people like a challenge and others don't.
I don't PvP and have never played in Open, nor do I value combat over other play styles, but I'm really enjoying the new AI and have played more since 2.1 dropped than I have for the last three months. I don't even consider myself a very good gamer as I tend to get frustrated and give up too early, but the new AI has brought back the sense of risk and the need for forethought that the Elite series has always been about. Not trying to appeal to authority but in '84 I never went into anarchies or feudal systems because it was too dangerous.
It's not impossible; it's harder but there is always a way if you use your brain. Check where you're going before you decide to go there, just like real life there are safer areas and less safe areas, except FDev actually state this if you can be bothered to look at the system map.
Another use of your brain would be to check your facts before you start whinging. Fdev curtailed the debug cam, Fdev decided not to make the game Pay-to-Win and Fdev decided that the AI was pathetically easy. Before you claim they're listening to a vocal minority please check out one of the myriad of player surveys on Facebook, Google+ and elsewhere which ask people about the AI... the majority LIKE it, YOU are the vocal minority whinging that the game isn't exactly what YOU want.
If you want to farm easy AI repetitively I think there's another game you can play... Zynga love players with spare money.