It may be a form of "false flag" psychological warfare. It may simply serve to antagonize Catholic beliefs, and possibly to set up/reinforce false ideas about transubstantiation / the sufficiency and efficacy of Christ's once-for-all sacrifice on the cross.
Yep could be? But I don’t believe your answer is correct, but could be?
Satan has shown he can quote scripture quite well and I think his minions mock religion that is real. He doesn’t seem to bother mocking Protestant services to much.