I bet you weren't the sole moderator of LFGSS. In any web forum I know, there is at least one moderator being online every day and much more senior members able to use a report function. I used to be a moderator for a much smaller forum and we had 4 to 5 moderators any time with some of them being among those that were online every day or almost every day.
I think a number of features/settings would be interesting for a forum software in 2025:
- desactivation of private messages: people can use instant messaging for that
- automatically blur post when report button is hit by a member (and by blur I mean replacing server side the full post by an image, not doing client side javascript).
- automatically blur posts when not seen by a member of the moderation or a "senior level or membership" past a certain period (6 or 12 hours for example)
- disallow new members to report and blur stuff, only people that are known good members
All this do not remove the bureaucracy of making the assessments/audits of the process mandated by the law but it should at least make forums moderable and have a modicum amount of security towards illegal/CSAM content.