I think there is probably something to this explanation. One reason I've seen for why women prefer not to go into start ups, for example, is that it's more of a high risk, high reward, gamble - which is typically more interesting to men. Likewise, ideologically conservative people are likely disposed not to make such risks.

The question isn't, or shouldn't be, "Do we have representation of women/conservatives/whatever in proportion to demographics?" Instead, the question should be "Are we treating people unfairly?"

For example, I'd feel quite comfortable wearing a Burnie Sanders shirt or hat to work. I'd expect that wearing a MAGA hat would cause problems.