So when Paul called the Galtians "foolish" he was taking on the mantle of godhood?
You're being way too sensitive. When people are wrong, tragically wrong, you need to tell them--sometimes with language that will wake them up.
Writing posts on free republic is NOT telling Rick Warren anything - especially when all that is really going on is gratuitous condemnation.
I might agree with you about telling someone the truth - if it is done with the intention of helping them and not with the callous view that the ends justify the means. When it is done with the intention of shaming them or humiliating them or publically crucifying them - that is consciously harming.