Seriously, if Mastodon would just rename 'CW' to 'Subject' or 'Subject/CW', it would alleviate so many hassles and conflicts while helping folks adjust to Mastodon norms.
As an Admin of a Topic Based community instance, in the years since the Twitter takeover, the biggest challenge our moderation team has faced has been to get dudes (yes, it's almost always dudes), to add CWs to certain topics.
Just calling it 'Subject' would have helped in maybe 50% of conflicts over our asking for CWs.