Is RoR really getting much hate? Because I sure haven't seen that. Admittedly I usually don't really pay that much attention to random framework flaming, so I might not be the best to judge, but I feel like at least on HN RoR is still discussed in mostly positive tone. Besides "everyone" already knows that RoR is dog-slow (relatively), which I think balances the discussion to reasonable level.
Most of the companies I talk to today, don't choose Ruby. They mostly go with JS (Either express or Meteor or others).
The "Hate" for me is articles like this. Don't know if "Hate " is the right word.
I also believe there is a very viable long-term strategy of choosing a few of the current "hotness" stacks over your early career and learning them thoroughly. When the time comes that you're not wanting to chase the new thing so much and you start to experience age-related discrimination, you can focus on maintaining and improving existing projects written in those "old" stacks. There are lots of people out there today making good money doing "unsexy" work like maintaining Java/JSP or ASP Classic apps. In ten or twenty years, those jobs will be maintaining Rails, Django, and Laravel apps.