Less people are posting quality content. There is an increase in stupid fucking gaming posts “checkout my score” and exercise posts “actifit report card”... This dilutes the newsfeed. The fact that DTube vids are not embedded into steem and those posts require you to go off-site is another factor.
Furthermore, people seem to be commenting less on quality content - or even reading content for that matter - and prefer to try and race for curation rewards by stalking whales (why else do so many posts have 150+ upvotes but not a single comment)......
Obviously we want to keep it free & fair, but I do believe that the current setup is causing too much BS, and promoting lesser quality and lower interaction.