The irritating thing about the original poster is the way he is judgmental and criticizes frum Jews for something that is just chitzonius. There are some reasonable arguments above about jeans. But even with the worst possible interpretation, is wearing jeans worse than the judgmental and nasty words of flatbush27?
Flatbush27’s post is illustrative of everything that is wrong in our society.
For the record, I am wearing jeans as I write this. My wife often wears a jean skirt, as do my daughters, each of whom is filled with a strong sence of yiras shamayim and chesed.