Freedom of speech is a very important thing.
However, my freedom of speech does not mean everyone else should willingly and freely offer their platform to me to spread my speech.
Much less are platforms obliged to offer their technology and services to those who spread false or misleading messages that endanger individual people or society as a whole.
If on this forum Simon decides to remove my posts simply because he doesn't like what I write, that is not a infringement on my freedom of speech.
If YouTube or Facebook decide to remove factually incorrect messages that claim COVID-19 is caused by 5G from their platforms, that is not a violation of the freedom of speech of the people spouting such nonsense.
You and I aren't obliged to allow people who want to proclaim whatever message to do so from our living room using our telephone, or from our back yard.
Neither are large companies obliged to offer their 'living room' to let people shout dangerous nonsense.
Freedom of speech means that you can speak your mind without being arrested. That's it.
And even then our freedom of speech is limited by other people's freedoms and rights...