“Person1, you simply don’t like the halacha and prefer the pop-culture (and non-Jewish) concept of live and let live.”
It’s not coming from the pop-culture. Most Frum people hold this way. I’m not 100% sure of the source – I think it’s the Chazon Ish – but it is how most Frum people hold. There are plenty of sources to be found regarding how we are to relate positively to not-Frum people and judge them favorably. You may have a different opinion and you may even be able to find sources to back up your opinion (although I haven’t seen any of them yet) but that doesn’t mean that someone else’s opinion is coming from the pop-culture.