By that point, what would having your own tech stack do? How do you even collect revenue when banks and payment providers cancel on you? This is the power of freedom of association at work, the power behind cancellation.
Even for people who don't agree with his libertarian politics, there's no arguing that he is anything short of an uncommonly decent man. He's certainly the closest I've ever seen anyone come to being the mythical "honest politician." So of course they're attacking him...
I have a hunch that any "extremely racist" comments may have been more to the effect that although slavery was very bad indeed, there might have been better ways to dismantle it than by half the country fighting the other half [0], which is a sentiment worth considering in the context of current events.
[0] https://www.lewrockwell.com/2007/12/bob-murphy/ron-paul-and-...