It is called 'the Internet' and can be used to disseminate whatever you want, within or (to a limited extent) outside of the bounds of the law of the land. As long as you remain within those bounds it is generally possible to say what you want although you might have to erect your own platform - in the form of a website, netcast, 'radio' station or video streaming service like Peertube - to be able to speak freely.

Centralised corporate platforms like Youtube, Twitter and Facebook are not public platforms and should not be treated as such. The 'net is the platform and should be treated as such. Just like the old telcos were not allowed to censor the phone lines it should not be allowed for internet access providers and backbone providers to refuse access or transit because they happen to dislike the message. There is a discussion to be had on whether service providers like AWS should fall under this regime, personally I see more in a decentralised approach but there are arguments to be made for including them.