It's not even close to what democracy is. Have a step back and think about what you're talking about.
I asked earlier what other American politicians have been banned from Facebook. Don't think anyone has responded. If the answer is "none except Trump", then your post is nonsense. If republicans choose to only use trump's new social media site (and maybe you should wait until it actually exists before getting excited about it) and not Facebook and Twitter then that's their choice.
My prediction is that absolutely no republicans would be stupid enough to voluntarily stop using FB and Twitter to solely use Trump's.