If I am forced to host your platform/speech/lewd gestures/etc. you're taking away my rights of free speech to not host your platform. No one is taking away access. What they are doing is kicking the drunk ass jerk out of the bar for harassing other people because they were warned to stop being such a dick and they continued on anyways. They can say whatever they want from someplace them own and no one is preventing access to them. They want a bar full of jerks, they can go right ahead and have no rules of decorum.
You're confusing unlimited speech with free speech. There has never been a right to access to all speech. Private conversations happen all the time and no one has a right to listen to those. So again, just because someone owns a billboard doesn't mean they are required to post your message. The courts have been pretty solid on this and it's why the baker won his case against the couple. You cannot force me to advocate for you if I don't believe in it.