Surely the usefulness of what the compiler outputs is at least related to whether it's commercial or not.
If I forked GCC and made a version where the produced binaries would only run on the machine where the compiler ran, and removing that was a subscription...I'd call it a commercial product.
That's something of a technicality. If the output of the compiler isn't useful without paying for something else, it's effectively a commercial compiler.
Sometimes "whataboutism" is just a comparison to something more common that a broader audience can relate to.
Fwiw, I find the canned responses like "appeal to authority", "whataboutism", etc, kind of lazy. I'd prefer you tell me why I'm veering off in your own words.
Can you do something completely unrelated to the question at hand without fulfilling requirements entirely unrelated to the question at hand? No.
That doesn't make the compiler commercial.
> Or to end users in some other way?
You can put your mac application on your website more or less as you've always been able to.