You are trying to disrupt the discussion with your apparently fake definition. That, or you only quoted the part which suited you.
1 a: the institution, system, or practice of censoring b: the actions or practices of censors ; especially : censorial control exercised repressively
to examine in order to suppress or delete anything considered objectionable ; also : to suppress or delete as objectionable
Note the usage of the word suppress. Even if they did not delete it it still constitutes censorship since they are deliberately trying to diminish the availability of the material.
Also note that it isn't only Merriam-Websters that agrees with this definition.
Censorship is the suppression of speech or deletion of communicative material which may be considered objectionable, harmful or sensitive, as determined by a censor.