[cenhyperion]

Some of the websites you access also run on non-free closed source code, too! This means the HTML they send to you is made by the smut that is closed-source software. The horror!

I'm all for open source as much as possible and whenever it's practical, but this blog post is akin to saying you shouldn't use C code on your system because there's non-free software written in C.

[adrusi]

This isn't advocating that users avoid using javascript (although it suggests that users who avoid non-free software avoid non-free javascript as well, which should go without saying). It's just advocating that client-side javascript code be released as free software and gives guidelines for doing so.