Aside from queueing, the biggest complaint was that users were not getting the content they wanted. They complained about scrolling their feed to no avail in search of content they liked. It wasn’t a matter of following the wrong people — rather, what they looked for differed during every session.
UX designer Steven Hoober said 49% of mobile users hold their phones with one hand, and 75% of mobile interactions are thumb-driven. He called this the “thumb zone” principle. With that in mind, can you imagine doing this on a crowded bus where you had little to no wiggle room for every post you wanted to queue?