Only mobile does that in my experience - you can tell what platform people send discord messages on based on this usually

simple toggle to disable it permanently

my reasoning is that i don’t want identifiable markers for what device im writing from. so all auto-* (capitalization, correct, etc.) features are disabled so that i have raw input

Being part of the minority that disables those things (and then admitting to it in public) provides a lot more analytical signal than you’re aware of. That’s a remarkably poor reason to disrespect your readers.

i don't care about the 'analytical signal'. the purpose is people can't tell if im writing a (discord, slack, etc.) message from my phone or laptop or desktop, and it works for that