They do it because it gets clicks and upvotes on places like HN and Reddit, almost never see a positive or neutral news article about Tesla on there. SpaceX successful launch news on Reddit would have like a 65% downvote ratio to suppress it, and it works.

I guess this headline not saying "Elon Musk's Tesla" or "Elon Musk's SpaceX" in a negative news article is a slight improvement compared to places like CNN.