Free speech has worked great for 100s of years. You don't give up wheels because people have started driving cars into buildings.
I sincerely hope that was all sarcasm.
Someone will probably comment soon to explain how your proposition is not at all absurd. A theater will be mentioned.
Time to shut down the free speech.
I know you're being sarcastic, but this is kinda true. Prior to social media, speech was regulated at every level though a hive-mind of individual choices about what to disseminate and the fact that broadcasting was expensive enough that systems of peer review (of the speakers or their works) had to be implemented to access it out of necessity. Social media took the peer review out of broadcasting, which does not seem to have been a positive development in many respects.
The speech part of free speech is overrated, and the editorial function of the broadcasting peer review systems is greatly underrated.