Ask for a minimum reproducible sample without all the fluff? I know, wishful thinking…
It‘s what I do when I file Webkit/Safari issues just because the odds of it getting solved increase 🙂
This is just another way of saying "yeah I don't feel like sandboxing my report causa I'm lazy AF and I want you to debug my code via a weird and contextless-text-description" 🤷♂️
I think you need to state clearly in the issue template that you want them to only reproduce the bug, not the entire codebase.
It's proven to be misleading in current form.