No one is concerned about casuals vs. pros.
The concern is that additions to the game, mechanical, visual or otherwise, that are intended to help casuals only serve to narrow the skill gap in the upper levels. Small, nuanced skills that served to differentiate the good from the great, the mediocre from the good, are gone, meshing everyone into these narrow bands of skill range.
The issue has never been that casuals will magically become great players, the issue has been that catering to them is ruining the game for the rest of us.
Also, fuck a blooming pistol. That's terrible.