That's true and that's actually something the courts consider. The standard is unreasonable burden. So it's not necessarily anything that makes speech harder,

That's true and that's actually something the courts consider. The standard is unreasonable burden. So it's not necessarily anything that makes speech harder, but if it does make speech unreasonably burdensome then it would run afoul of the first amendment. So if the alternative places where such speech could be hosted were extremely limited, expensive or very difficult to use then the law banning a platform could create an unreasonable burden.