Earlier quoted context omitted.
All online platforms need to have moderators to prevent things like spam and illegal content. That doesn't mean that they can't also uphold the idea of free speech principles though. Musk really went crazy with cutting staff, but I'm not sure if it was because he wrongly thought he needed to cut the moderation teams in order to support free speech or if he just did it because moderation is expensive.
To really drive home the point, simply consider that pre-Musk Twitter did not cite free speech as a core value.
July, 2021: https://archive.ph/VlpYI
> Defending and respecting the user’s voice is one of our core values at Twitter. This value is a two-part commitment to freedom of expression and privacy.
> This is a global commitment, and while grounded in the United States Bill of Rights and the European Convention on Human Rights, it is informed by a number of additional sources including the members of our Trust and Safety Council, relationships with advocates and activists around the globe, and by works such as United Nations Principles on Business and Human Rights.