I try to view it through an evangelical theological model and not get distracted by all the side activity, as if there were sins that were so bad that just to be near people committing them would damn you. Are the persons concerned putting their personal trust in Jesus Christ for His gift of eternal life. To (at least most) evangelicals this is a yes or no, not a maybe or a partway. Certainly in the evangelical theological model it is a yes or no. The life that is led by faith then provides proof of whether it was real. Christ has a way of blessing even stumble-bum sinners who are still in some way sincere about accepting Him. I know this as perhaps foremost among such stumble-bums. Yet I see a grace that I couldn’t possibly have earned and it becomes even more obvious in retrospect.
The people who get off on hobby horses either might not yet have done this, or possibly they aren’t very mature yet. Snap judgments can’t be made without some interaction and/or close observation.
I will say that I have heard Protestant preachers give excellent sermons, which were nearly identical to things the nuns used to tell me in grade school.