Yes, all of the above is on the condition that some distribution happened (and you can prove that).

However, distribution also happens in places you might not expect. As a business, I'd stray far away from such constructs even if I only use this construct internally.

However, this is purely based on the wording of the GPL. For example, the EUPL explicitly covers the creation of derivative works - and I'd argue that the proposed circumvention would create a derivative work.