Markdown should be channel-/role-based opt-in

While markdown is nice for formatting things where they matter (like announcements, guidelines, etc), it has huge potential for abuse.

Consider the following:

# I NEED HELP
# HEY [at]everyone I NEED HELP
# {insert some more spam here}

But that's only the tip of the iceberg.

[Totally not malicious link](hxxps[:]//definitelymalicious[.]xyz)

While the latter still prompts the end users for confirmation, it won't stop 1) bad actors from trying with typoequatted/hijacked [sub]domains, and 2) users that accept any/all prompts by default without reading.

Please consider opt-in markdown based on certain channels and/or roles. Moderation is already difficult as it is, and this will only add more layers of effort on large community servers.

Thank you.