You can be dismissive all you want, but the point is to acknowledge you don’t understand everyone’s situation and you can’t make sweeping generalizations like “I did it and I can judge you if you _didn’t_ do it”.

Goes both way, yes.

History has examples of extremely underprivileged people not compromising on the values even when facing death or torture.

That value usually isn't not telling white lies of no importance in a job interview.

When does it stop, though?

A white lie during interview, a deadline you promised and knew you could not deliver? A product you ship that claims to do X, but it doesn't?

All's fair in business and war.

You can also acknowledge that most people abandon their principles long before they are anywhere close to starving and will not be harmed (physically) by being reminded of that.

To the people subscribing to "privilege theory", all positive differences are privilege and all negative differences are oppression, no matter if earned or self inflicted.

That's the logical conclusion you're forced to arrive at if you take these people seriously.