The discussion revolves around the default post settings on Discourse, specifically the minimum post length of 20 characters and topic title length of 15 characters. IanManning questions the reasoning behind these settings, wondering if they are intended to prevent instant messenger-style responses. Bas confirms this, sharing a link to a meta discussion on the topic.
IanManning also asks if anyone has experimented with these settings. Architect responds that they have reduced the limits on their site, finding the default numbers to be too high. Architect suggests that reducing the default limits to 75% of the current values (e.g., 15 characters minimum post) could be beneficial, while also noting that chat channels may be more suitable for brief conversations.
Hiya
I’ve looked through topics tagged with “post” but couldn’t see anything about this, and I think I’ve searched the meta…my basic question is…
Why are the default post settings as they are? e.g. a minimum post length of 20, topic title 15 etc…is this to present instant messenger style “Yeah” responses? Have people experimented with these settings?
This is exactly it! 
I’ve brought those limits down some, the default numbers can be too much and be arbitrary thresholds for typing.
The idea of having limits to prevent conversations being one sentence at a time back and forth does make sense in theory, but if a site is setup with default settings and the administrators aren’t interested in listening to any feedback about possible changes that can be annoying.
If the team was going to consider changing any of the default limits I would vote those be reduced to about 75% of current limits or so (meaning default of 15 characters minimum post instead of 20).
There are other options of the chat channels also for chat communication can be better for that, while posts are mainly for official proclamations that need more characters.
Thanks all for the replies!