Asked google Gemini AI to create a plugin.
The code would need to be audited by an experienced Discourse plugin DeV.
If there is enough interest maybe we could setup a group to co sponsor a plugin
Note I am not a plugin DeV.
AI-generated summary
Heliosurge proposed creating a plugin to introduce auto-delete as a category-level option, sharing AI-generated code and suggesting a potential co-sponsored development group. JammyDodger expressed caution regarding the sharing of untested AI code in feature requests, recommending it be moved to the Development category for exploration, and questioned the stylized “DeV” capitalization used by the original poster. Heliosurge agreed to move the post and clarified that “DeV” simply stands for Developer, attributing the capitalization to personal styling habits similar to “FoV” for Field of View. The conversation then shifted to the existence of the feature itself when nathank noted they could not find an auto-delete option for replies. Lilly clarified that the feature does exist under topic timers, providing a screenshot as evidence. However, nathank observed that while the option is available for standard topics, it appears to be missing for system posts, a limitation they confirmed was not present even on meta.discourse.org despite having high trust levels.
I’m not 100% sold on sharing untested AI code on here. I’m not sure how useful it is. Perhaps it should be limited to the Development category for exploration rather than shared in a Contribute > Feature request.
Also, out of curiosity, what’s the ‘DeV’ format all about?
Can you move the post to Development? So a link is present here?
My apologies. “DeV” just short for Developer.
The info contained does say to test in dev environment and use with caution.
I got that bit. 
I wasn’t sure if there was a particular reason for the random capitals?
That is just a me thing. 
With VR for example usually I and some others use FoV for Field of View. Maybe not needed & more of a styling
Does auto-delete replies even exist any more?
I can’t find it, and ask.discourse.org doesn’t have a clue where it has gone.
Ah - but not on the system posts it seems!!!
I updated the FAQs, made a comment, and then wanted to set it to self-destruct after a month. But the option isn’t there:
I then checked it here on meta.discourse.org (where I am of the lucky TL4s), and didn’t see it either. And jumped to a (faulty) conclusion!
Ok, now I know that it isn’t available as an option on system Topics for some reason. Weird!