i kinda agree with /u/u_tamtam, it's standard practice to not change titles when posting articles to link aggregators, so most users (reasonably so) operate off of the assumption that the titles aren't altered

this gets esp confusing, when ppl change the headlines only slightly

The titles in the articles are themselves editorialized and sometimes even misrepresent the content. I think the post title should reflect what was interesting about the article. You are of course free to make your own community with whatever rules you like.