It looks like there it's not possible at this point to exclude elements by their id. This Feature would be really great especially when fetching related entries.
another good suggestion, I think. I had excellent reason to need and request this fully functional on 'another GraphQL'. That's gone away with Craft 3.3's abilities, but could well come up for other projects.
It may be that there's a kind of standard naming for this query modifier: idNot:
You know what. Thank you for prodding on this. I thought it wouldn't be possible in a clean manner since an array of integers cannot contain strings and vice-versa.
But, as it turns out, there is a way to do that to make ["not", 20, 120] possible. Just have to add this to every query argument that can accept not.


Coming to a release near you soon.
Alright, with the next release you'll be able to that.
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Coming to a release near you soon.