We have an entire generation of people who grew up on short form text as their primary way to communicate electronically. In many cases they won’t even bother to read even a couple of paragraphs.
In a work setting, all the shorthand slang and emoji/meme based communication is unprofessional and in my experience many people actively remove emotion from their slack messages. We strive to be neutral and objective because slack messages are monitored and forever.
As much as I hate to say it, I am not completely opposed to some form of limited RTO because Zoom and Slack simply are not enough to get context in many environments, even if you are added to every thread and meeting.