Previously on Meta Slate mentioned we had initially restricted the size requirement due to a new set of platform safety features we had implemented. However, we saw that limiting the size of uploads in this way heavily affected users and functionality.
As such, we have removed the minimum image size restriction and added additional tools to ensure Trust & Safety goals. While I cannot go into detail about those tools, we are confident that this change will still provide the desired preventative measures while allowing standard workflows for community members.