If only swords and muskets are protected by the Second Amendment because the Founders did not know of anything different, then the First Amendment is limited to old religions, speeches and print media. Online assemblies were never conceived by them and are not protected. Twitter posts, Facebook, jpeg photos, and all other digital objects are also not protected. Television and radio are also unprotected.
Seriously, if this is the quality of his thinking, then he has no business voting.