Those are definitionally not microbloggers. It's ok for a platform explicitly for microblogging to not cater to their macroblogging desires.

Definitionally not?

"Microblogs, for example on Twitter..." https://dictionary.cambridge.org/dictionary/english/microblo...

"Some popular social networks such as X (formerly Twitter), Threads, Tumblr, Mastodon, and Bluesky can be viewed as collections of microblogs." https://en.wikipedia.org/wiki/Microblogging