Air Whisky has always been an odd duck. They're privately held and have refused to replace their CRJs- they invested 175 million into US Airways during their 2005 bankruptcy in exchange for a long term contract.
As an aside, I find this quote from the pilot forum hilarious:
A decade ago, from EWR to ATL (Atlanta), we flew eight flights a day on Boeing 737s. Delta (DL) flew 11 flights a day on mainline equipment. ATL is a bigger hub with more connectivity, so its 11 flights versus our eight made sense, but we still had a competitive business schedule for customers that lived in EWR, and when our frequent flyers in EWR wanted to go to ATL, they chose us. By 2013, we were flying six regional jets a day. Guess what happened then? Many of our EWR customers switched to DL, because they didn't want to fly on regional jets and we didn't have the frequency to support their business needs. That didn't just happen in the EWR to ATL market, it also happened in markets from EWR to DTW (Detroit), MSP (Minneapolis), DFW (Dallas/Fort Worth), CLT (Charlotte, North Carolina), etc., and across the board in many of our competitive hub-to-hub markets.
LOL. I jumped ship from CO/UA in 2013 for this exact reason. It only took them five years to figure it the hell out.