@alxsim @polotek @neckspike this is one of the strangest feature choices made in recent Mastodon memory.
The THEORY is that you want to know about (potential) abuse involving one of your users (victim, affiliate, etc). But it doesn't always force the report to include the post in question, and sometimes even that post context isn't enough to understand why the report is coming to you, so it's... messy.
I assume much feedback has been filed and ignored about this (I've given up)