I get what you are saying and in some degree, I agree. There IS a lot of very good content, but it takes some work to find. THAT is the problem IMO. The 'hot', 'trending' etc don't really provide an interesting experience as you pointed out. So we're left with the filters, which are a bad option if you are just catching up with general events, or else you are scrolling, scrolling, scrolling. I think a 'front page' with a combination of 'hot & trending' + people you follow + user defined tags might be more compelling as a form of programmed curation.