There's no liberty without the power to preserve it.
Clearly those are not actual second amendment lovers, they are deadly toy lovers, and therefor profess to love the second amendment.
There are those who actually believe in the ideals of the second amendment, the question is how many of them
A) Live in Portland/DC
B) Are willing to put their lives on the line for this.
I'd like to think that if I lived there I would be.
Yes, it is to protect liberty to do what you will with the software/source.
It is also to make sure that the developers of said software will be in a much more difficult situation when it comes to abusing the users of their software. Stallman talks about this as well.
Not that everything is a power dynamic, looking at life that way kills all your friends and family really quickly.