A former airline of mine saw a similar issue with guys transitioning from round steam gauges to glass. It was unfortunate. Those guys could fly the **** out of an old school airplane in the mountains (think Rockies) but struggled with the new glass stuff. Many were unfortunately let go.

Yes, there is an airline that is sending guys who have been flying older turboprop airplanes for a long time and they are having significant training issues with them. Much better to hire a low time ex-CFI than a guy with 15,000 hours of turboprop time. In fact, in my new hire class at a regional airline many years ago, the only guys who were let go in training were turboprop guys. One a SAAB and the other a B1900 CA.

This doesn't say anything about their flying abilities. But we're past that now. Operating an Airbus is less about flying than it is about managing the automation.