Freedom of speech means that the government shouldn't arbitrarily keep you from expressing yourself in the way you see fit.
Censorship happens when the government supresses certain forms of expression.
Neither of these situations apply to this case. Google - as a non-governmental entity - can freely decide where to advertise and where not to advertise. And nakedcapitalism can freely decide if they wish to continue publishing certain content without Google or stay with Google Ads under their terms and conditions. No one is forcing either side to do anything.
Would you have the government intervene and force Google to advertise on a site they disagree with? Now that would be arbitrary
Why are you so angry? And why don't you understand that the only rights you can claim protection from, are the ones related to government actions? Whether or not you agree with the idea of government as a way to come to terms with the fundamental dichotomies of the other. That is, Johnny's mom won't force Johnny to play with you if Johnny doesn't want to.
In this analogy, Johnny's mom represents capitalist opression bypassing in counterpoint the surrealism of the underlying metaphor