The outcome of the SOPA fight was the 2015 Open Internet Order (which ostensibly treats the Internet as a public utility and protects against both government and corporate attempts at censorship). Docket 17-108 (what this is about) reverses the 2015 outcome and gives ISPs discretion to regulate the web and slow down or block companies with competing services, which is what they did in 2011 and a reason why the Open Internet Order was crafted[1].
[1] http://www.businessinsider.com/verizon-blocking-google-walle...
SOPA had absolutely no bearing on freedom of speech. SOPA would have made internet publishers liable for the content they publish via user submission. The result is that a content owner could then sue the publisher, who currently hides behind DMCA, instead of needing to perform the more extensive discovery to sue to violating user who submitted the work. Internet publishers are still liable, even without SOPA, if they fail to respond and take necessary action against a violating user in response to a DCMA take down notice.
By equating net neutrality, an almost absolute good, with SOPA this looks much more like an excuse to protest something instead of actual substance.