Do not special case the is admin/mod always being able to accept post friction for posting to a thread.
Instead apply the Bypass post friction restrictions per-forum user-group permission for the admin/mod user groups.
Show the phrase sv_pf_messages_header_no_reply instead of sv_pf_messages_headerfor threads which outright block replying due to post friction settings not being met.
Default text is You can not reply for the following reasons.
Add post friction option to require 2fa to reply to a thread/forum, this is shown upfront like the old thread warning when viewing a thread
Can be applied globally, per-forum, or per-thread.