Does Apple still fix screen coating issues on the mid-2014 MBPs?
Apple has a list of current Repair Programs on their website; unfortunately, this one is not listed.

However, a Macworld Article (which references MacRumors) states:


  According to MacRumors, Retina MacBook Pro owners affected by this
  issue will be able to get a free replacement display for up to three
  years from the original date of purchase or until one year from
  October 16, 2015—whichever comes last.


So, if you purchased it new in early 2015, you have until "early" 2018 to get it repaired (it sounds like you missed the window).

I would still take it to an Apple store and plead your case; it never hurts to ask.