Yeah, if your platform has opinions then you don't have actual free speech.
Email is free speech.
Mail is free speech.
Talking in a square is free speech.
Talking to friends Is free speech.
Anything where a third party can deny, edit, shadow ban, or delay is not free speech.
Twitter is not free speech
Facebook is not free speech
Whatsapp is not free speech
Newspaper opinion pieces are not free speech