It literally isn’t censorship by definition.
Censorship is government restraint of publishing.
Choosing what you want on your site or in your newspaper is what publishers do every second of every day. It’s their freedom of speech.
Choosing who you wish to be associated with in a publication is freedom of association- protected in the constitution.
Choosing who you wish to buy based upon your perception of the quality or harm caused by a product is again - a fundamental right.
Your argument is specious.