I would argue that "Freedoms" as a whole continue to be the #1 most important bits of the legal and cultural landscape. That the focus of those freedoms has shifted from racial equality to birth control to media freedoms and freedoms of identity expression and definition (gay marriage being a prime example) is interesting as a subset but still qualifies under the much bigger whole.

That being said... I agree with you on the importance of software freedoms and the importance of Freedom to understand and affect the things you use. There is a fascinating analogous relationship between the difficulty of understanding/using software now and the simple capacity to read hundreds and thousands of years ago. Literacy was touted by revolutionaries as the means to achieve liberty and freedom for the poor and under-privileged. That literacy has begun to morph into a different format, one which I think is unfortunately much more complex than it ought to be.