You should want transparency as a matter of the rule of law - you can’t know what laws are broken or what changes to the law need to be made if there isn’t transparency.
Again, we’re aligned on that. But the “ma taxes” argument is facile because for nearly 100 years there wasn’t even income tax so it was secondary taxes through purchases or tariffs. As for off duty codes, there usually aren’t any meaningful ones and they generally are very constrained by the legal system (eg they can’t punish you for political activity). It’s the same reason someone standing up to a politician and screaming “my taxes fund your salary” is blatantly incorrect. The economy is a circular dependent system. For example, government tax dollars pay corporations which then pay your salary which you then get taxed on. You’re over privileging your personal role in the economic system when you make this argument and then the next follow up argument is “well I pay more taxes than you so I should get more of a say than you in how government is run”. It’s a flawed premise that leads to all sorts of directly harmful lines of reasoning. Just argue that we’re a country based on the rule of law and no one is above that. That’s literally the founding principle of the country.