Then I might have assumed wrong ^_^
Oh well, he mentiont it at least, that it would take loads amount of work to port and maintain it.
As far as I can tell, scirra is a small team with ashley being the main programmer.
I think for such a porting project and maintenance, he would require a few clones.
Construct 2 is using a lot of Windows specific baggage, from the looks of it.
This could explain his past comments.
Truth be told. If I was him I would want to get rid of the baggage, no matter what. Not even because of a possible port to *nix but because of the maintainability.
Microsoft is prone to introduce software breaking API changes. What works now might not necessarily work with Windows 9 or 11 (never mind 10, as that's an entirely cloud based OS).