It needs to be short - there is already a limit that worked well - why bikeshed it more?
A limit that worked well for who?
Almost every twitter/x post submitted to HN has people labelling their posts as "X of Y" threads, using images as text, or using pro account posts.
You can see it yourself: https://news.ycombinator.com/from?site=twitter.com Ive just looked at 30 and each of them exceed 280 chars by far.
I think this is the opposite of bikeshedding, it's literally a core feature and constraint.
A limit that worked well for who?
Almost every twitter/x post submitted to HN has people labelling their posts as "X of Y" threads, using images as text, or using pro account posts.
You can see it yourself: https://news.ycombinator.com/from?site=twitter.com Ive just looked at 30 and each of them exceed 280 chars by far.