Yeah, this is a relatively unusual decision to find that a user agreement did not give enough notice of an arbitration clause.
See for example:
https://termsfeed.com/blog/how-not-place-i-agree-to-checkbox...
https://en.wikipedia.org/wiki/Nguyen_v._Barnes_%26_Noble,_In....
http://blog.ericgoldman.org/archives/2014/07/23andmes-browse...
And just to follow up, "protesting" isn't really the right word. A lot of times district court judges will write opinions supporting minority positions in the law in an attempt to influence higher judges and to provide a "template" legal reasoning for higher judges should they want to overturn precedent.