Rangers marketing themselves as a Protestant club for Protestants certainly contributes to the issue.
Lots of times Scottish football had the opportunity to say no to anti Catholic discrimination in our game, we are currently where we are by the route we took to get here, it would be unthinkable nowadays for instance for Partick thistle v Rangers in a fund raiser for the orange lodge, the orange lodge is simply a anti Catholic organisation. Motherwell fans gathering before a cup game within the last 10 years for a pre game sash anti Catholic knees up. However the orange lodge is most identified with Rangers, the annual orange church parade was held at ibrox , ibrox still holds orange presentation gifts. Orangism was easily identified as anti Celtic as that what it was
Football would have been in a better position if it had dealt with Rangers anti Catholic practices, the whataboutery used by Scottish football is an obscene slur on those victimised by Scottish football