My pool blocks firmware that I can detect violates the license.
It's well known that I do that.
Even in bold red on the home page ...
If you distribute a firmware, you are required to supply the source code upon request.
That's how the GPLv3 license works (and has for more than 10 years)
Since we are discussing this subject in two topics I will continue this discussion on following topic. Seems to me it is off-topic.
https://bitcointalk.org/index.php?topic=5346051.0