You have freedom of speech. What you don't have is the freedom to shout it from someone else's front porch.
Good analogy. Cult45 won't get it.
Sadly, I believe you are correct.
The metaphor is elegant, but I believe inappropriate.
Facebook and Twitter both set up as sites where people could talk freely in real time. They both have BILLIONS of participants, and people being what we are, the free speech on these platforms has started wars all over the globe. This is just another one, you know: consider Egypt, Ukraine, etc., earlier.
One can see they are disconcerted, but they did set up their front porch as a public speechifying site!
Then suddenly they pull that back and say, no, no, this is not what we meant at all, you can only trade recipes on our sites, nothing more controversial than that! That's what Ravelry did: the women's knitting site. They restricted posts to NO TRUMP EVER. Leftism and knitting only. Oooooookaaay, but that's not free speech. I agree Twitter and Facebook
can do that, but they'll lose customers in the millions: I read this morning that Twitter this very week HAS lost millions.
I suspect the concerted action against Parler by Apple, Amazon, and Google is partly an effort to stop the instant collapse of the two big social media companies. People are angry about being squelched and want free speech. They will go to the front porch that offers that.