Because of anti-customer features. Hard to implement those in a FOSS project, without a fork undermining you.

He does attract a certain crowd on his channel. I think he did express his support on human rights issues like LGBT and racism on certain occasions. He seems kind of libertarian tho. Nevertheless he keeps his political opinions mostly to himself. The FOSS and privacy movements just attract weird people across the spectrum.

His videos are pretty watchable regardless of personal political opinions imo.