Funny thing is that third parties provided the equivalent of multireddits back in the day, by parsing the stream and sorting them into columns, and Twitter eventually introduced lists.
But all this has since languished, as neither their site nor their official apps makes it easy to show lists.
My problem with twitter is exactly the opposite. Each tweet might be brief, but there are _so many_ tweets to scroll through, multiple sources as they can repeat themselves or retweet. Then you add in _personal stuff_ that gets thrown in from these key players adding more noise.
I just don't have time nor willing to put in the "effort" to make twitter work. It is just not worth it to me to be on the cusp of breaking news vs being slightly behind with a curated reddit. Even better is making use of multiple focused multireddits like:
/me/m/code/, /me/m/sports/, /me/m/games/, /me/m/news/.
To me, that is true brevity in my goal of getting a glance at current events in my fields of interest.