I'm not very good at counting lines of code, but it seems like it's slightly less than Django. From a cursory glance the main difference I saw was that only postgres is supported, not necessarily a bad thing.

From the readme: Plain is a fork of Django, driven by ongoing development at PullApprove — with the freedom to reimagine it for the agentic era.

Very likely its being changed by an AI model, driven by human prompts.

That would be good if the changes are to slim it down by 80%.

Same thoughts as soon as I saw the code in the readme