[closeparen]

You cannot compel a platform to carry a message against its will. This is true.

Restricting the messages a platform may carry according to the state's view of merit or truth, on the other hand, is exactly "regulating speech."

EDIT: To be clear, I am responding in the context of the upthread "Blocking WhatsApp would be a perfectly justifiable solution! Regulating it would be as well." Your argument seems less puzzling in the context of the very different assertion that Whatsapp itself should exercise editorial control. Apologies if this is what you meant.