That's interesting, because my philosophy is providing scrollable streams of conversations - some of which are incredibly long, while being agnostic about post length (on our platform it is for all intents and purposes unlimited), all in a scroll based feed environment.
In my mind there are no incompatibilities or cognitive hurdles, because long posts, like long conversations - are things you glance at the teaser part to gauge your interest in, and then manually open if you wish to look at in depth. Many we don't - and they scroll by as if they were a microblog post/conversation. If you find it interesting, it's a click to open the post/conversation inline and you scroll through the long post/conversation, and when you reach the end you just resume your doom-scrolling feed. It's different than the kamakaze attack of single completely unrelated posts, but it works. We also offer single post unthreaded viewing if you prefer the microblog style over the conversational/blog style. And you can open any of these in a separate dedicated page if you want to disassociate them from the feed and spend more quality focus time on them.
I suppose it really is a different mindset, but we've spent a lot of effort trying to find a workable middle ground.
