Many of my recent ME/Asian colleagues went sick at short notice in anticipation of difficult approaches/landings at EU/NA destinations. Snow, ice, winds, even low vis were instrumental in their considered decisions to opt out. That "option" they frequently exercised until recently may not be so readily-accepted in the future.Replacements will be thin on the ground. And in the air. Excellent piloting skills come from experience and aviation culture. The stats prove that EU/NA operators are safest. Caveat emptor.