Your faulty cooking analogy was already sent back to the kitchen, before you changed the chef from yourself to some new and fabulous cook. Whatever his results, concealing when he was hired that he relies on cookware-color alone is misrepresentation of his knowledge and skills, and would endanger the restaurant's license, not to mention the health of its patrons. It's a matter of whether a chef — you or François le fabuleux — can be trusted to do on the job.
The identity of my cook didn't have anything to do with my hypotheticals. They were just vehicles for demonstrating my reasoning. Maybe you didn't find my alternative context amusing, or maybe it was the points I was making you didn't like, or both. I acknowledge that you were not persuaded, since you seem to continue to put a higher emphasis on what someone says or thinks, compared to what is revealed by what they do. In my opinion, it's easy to trust people to do their job well when they have a track record of doing exactly that, no matter what they may have to say. I acknowledge that you are entitled to a different opinion.
I'm glad you seem to see a reasonable connection might indeed be made between an officer's public statements on 'political' matters and the possibility that he might apply the same warped thinking to his work, and so enforce the laws less than fairly.
I think I said pretty clearly that I don't see the rational connection between views on immigration/cultural integration and the work of a parking enforcement officer. I also told another poster that I don't think there's any way of proving whether his views are "warped" or not. They are just opinions as to what makes for a better society. Since we live in a democracy, those opinions will only govern immigration policy if enough people hold the same views.
I certainly have not called for his dismissal, and in fact made the point above, that he and his postings are only being looked at (the sort of thing you might call "a cursory review").
It was his job performance I suggested be reviewed, not his social media posts. I don't care about his social media posts. I do care about his job performance as a civil servant with a certain measure of authority.
In fact, according to the OP, the PKO closed the Twitter account in question as soon as it attracted attention. We can debate a hypothetical whether someone that ashamed/embarrassed/regretful/scared about what they once saw fit to broadcast to the Universe, however hurtful or dangerous to those their words attacked, could ever be a worthy hire for a position of public trust and power any time you wish.
Knowing that others in positions of power may have an authoritarian and intellectually intolerant view of the world, and knowing that reason certainly does not always win out, especially when politics are involved, are good reasons to fear repercussions for actions or statements that really ought to be left to be. I don't think that protecting yourself against those with power over you, who aren't necessarily governed by reason, is tacit admission of anything, except perhaps your low expectations of others.

