Funny you mention this because I was about to bring it up but as a bad thing. They don’t care about Jesus or his teachings or any of that because they see the whole “all of your sins will be forgiven” as “I can do whatever I want and then just have to tell a priest about it before I die and then I get into heaven”. Why they think they can pull a fast one on a being they believe is omniscient is beyond me, best guess is maybe they have a really simplistic view of rules and think exploiting loopholes can be done in good faith?
The Bible actually has things to say about that mindset. Namely, if you think “I can go back to sin and just get forgiven afterwards no biggie,” and then do so, you’re not going to get forgiven (Hebrews 10.) But that doesn’t get preached much, probably because it’s easy to get it twisted and think that an inadvertent slip into sin will have the same effect.
The older I get, the more dangerous I see Calvinism as being. Mind you, I believe it is true, but I see why it is difficult to explain. The child-like laws, given to literal children, seem to me to be a way of gently guiding people into the deeper waters. Unfortunately some people refuse to ever grow up, not just in Christianity but in every single aspect of life. It is so much easier to just play make-believe and spare people’s feelings (namely, probably the people doing that are attempting to spare their own). We are wounded, due to the effects of sin, and then for lack of knowledge the people perish.
The very surface level of Calvinism, being that God is sovereign in all, is something I agree with, but it includes predestination, which is where I take issue. Why would God not offer the same mercy to everyone? And when He does offer mercy to someone, why would He not let us choose? He is sovereign, yes, but He is also loving, and love is not forcing some people to become model citizens while letting others perish without ever having any hope of salvation.
I do believe predestination is technically true in that God already knows the future and knows who will or won’t ultimately be saved, but that doesn’t preclude free will being an operative part of what gets us there.