I come from a mental health background and spoons is excellent for anyone. It needs explaining, sure, but neurodivergent people can use spoons to explain the cost of their executive dysfunction, people with depression can use spoons... hell, people free from illness can use this expression, too!

I get being bitter about jargon but it's an extremely versatile and easy-to-understand metaphor. I think the aim here should be to share it more, rather than try to label it as improper to include.