You could just opt out by using another platform – or better yet, self-host your own instance of Nextcloud, Mastodon, or similar. It's not like you are out of options.
Meta's services are far from essential.
I personally use and prefer Nextcloud, and it's actually better than the mainstream alternatives in some ways. E.g. You do not have to use Apple's notes app if you do not want it. I am tremendously irritated by the proprietary bloat that is being forced down users throats, mainly by companies such as Apple and Microsoft.
But still, why insist on dictating what other website owners and companies should do with their platforms? In our part of the world, I like the idea that this is "for each themself to decide" (at least to an extent). Interoperability and compatibility with other platforms is important to strive for.for security (Apple devices texting Android devices for example, https://www.android.com/get-the-message/).
Undeniably, however, proprietary communication platforms are not really necessary for anyone to use, because free software alternatives exist that are often better and more secure.