The argument was an odd one to begin with. The government argued that it was not stifling speech because you could say, "I have received between 0 and 249 NSLs, and here's what I think about NSLs..."

You could not, however say, "I have received between 0 and 249 NSLs and here's what I think about NSLs (and I should know because I got one)...

If it's not true that someone can complain about NSLs generically, then there is an odd position where one can comment on facts or opinions about NSLs precisely until one actually has experience to support facts or opinions about NSLs.