On the other hand, libraries don't stock every publication that is printed, either, and that's censorship too, if you want to make that argument.
Bullshit! Access to "protected speech" is not guaranteed by the First Amendment. The speech has not been censored, just access to it on the public dime. A forum is not guaranteed by the First Amendment. There is no Constitutional protection that affords the right to use public punds to view whatever one wants. No one's rights have been violated. The court took the position that because poor people may not be able to afford internet access, then restricting access at a library "infringes on their right to use the internet". Total horescrap!
I certainly don't think it's "censorship" to choose not to carry something, and this ruling is about choice. I'd far prefer seeing the local librarian make those choices than the Fed.