This is where "private company" arguments start to fall apart when it comes to free speech because at some point, you need hosting or a network connection.
Yeah, there's a big difference between "We don't want to host your content on our public-facing platform" and "We don't want to sell you digital infrastructure."
I'm all for the right to control how you present to the public, even if you are Twitter.com, but locking groups of people out of commerce just feels sinister.
Political yard signs have an outsized effect on certain demographics too, but should that mean that once you start putting up yard signs you have to put up all yard signs?