His in other words seems to be a highly personal in many ways highly individual quest for self perfection and not a doctrine about the value of freedom of speech in general.
The First Amendment protects the editorial discretion of private providers, not just because they have property rights in their platforms, but also because we value the diversity of speech policies and platforms that develops from this approach.
Under Bush's proposal--and this is what he didn't say in his speech--the value of that employee's health insurance policy would be considered taxable income.