That looks nice, but often the [describe your problem] part is three paragraphs and a few code snippets.
Though we also usually have private team channels and separate support channels for a team in our Slack. I.e. the SRE team might have their own sre-priv channel for team chatter, and an sre-support channel for external support requests, so perhaps that is a function of this format.
You'll often see a new msg in the support chan with something like the following:
> Hey #TEAM, we're seeing an issue with the spline reticulator not reticulating splines. Started last night. Details in :thread:. Thanks!
followed by notes/logs/stack traces as needed. Works quite well, and doesn't choke the channel with endless walls of text.