In that case, yes, the OPM already “doxxes” most federal employees, even making their salary data public. It’s seen as a worthwhile tradeoff to give taxpayers transparency into how their money is spent.
That's not doxxing, that's accountability of the government to the people. Doxxing is when a person is doing a participant in an online discussion group and information they haven't made public about their real world identity, etc., is made public, it is not when people are performing high level government management functions and their identity is attached to their actions.