Re: Why does the GNU foundation promote uncommon distros?
Trisquel contains only free, open and libre software.
It does not contain any proprietary packages, binary blobs, any packages with dubious licences or licensing issues.
I assume the other two distributions are similar in nature.
It's the GNU philosophy,
Read any articles written by RMS and you will understand where they are coming from.
If you believe everything you read, you better not read. ~ Japanese Proverb
If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed. - Mark Twain