Yeah, I agree with your personal experience regarding who is generally turned off by it, but I think that's why it needs to be a masc/Dom lead thing. Subs are too turned off by it conceptually and don't want to take the lead. I think the big issue is how it's incorporated into foreplay. Unfortunately, being sexy and dom about consent is not second nature to everyone, but it can definitely be done.
"Do you want me to X" or "wouldn't you like that?" can be sprinkled throughout foreplay. "Tell me when to stop" or walking someone through an RP scenario where you respect their no and then they have to enthusiastically express consent to proceed. Absolute basic outline below devoid of all sexuality and not actually phrasing I would use: "Tell me to stop" "I don't want you to" "Tell me anyway"
Option A "Ok. Stop" You stop and then have some sexy banter and tell them they need to ask you to continue. You've now demonstrated that you will respect their no even if you know it's just play and you have their enthusiastic consent to proceed. If they don't want to proceed either they didn't actually like what was happening or you can try to ask them what they want instead and now they're in charge.
OR "No I like this too much" You can proceed and potentially ask sexy follow ups to understand what specifically they like. "Oh you like how I X or do you like how I Y better?"
The issue is there's a fine line between sexy and cringe. Knowing how to read a situation will definitely help, but the concept of using consent to build suspense is not new. There's a whole genre of bodice rippers where the woman is the one that finally gives in and lets the man take her because he insists he won't touch her until she begs for it. It obviously requires more restraint from the dom, and different techniques work on different people, but generally a way can be found to put consent in the hands of a sub without letting them feel like the power dynamic has been lost. It really is an art form though and not everyone can be a great artist, but we can all try our best.
Even so, the guy said he told everyone he was a citizen. If someone asks me if I'm here on a visa and I respond "no" and then they arrest me and I'm like "I'm a citizen" you can't then act like they were using trick questions for plausible deniability. The second I say I'm a citizen that goes out the window regardless of what I was asked. If the guy answered every question with "I'm a citizen and (answer)" I don't think the result would be any different, so allowing them to hide behind "trick questions" obscures the fact that they are lying to get POC rounded up. They are lying and they don't need "trick questions" because they don't care what your answer is. You could answer the trick question "correctly" and still be rounded up. Anything suggesting that the fault lies in anything but the institution and its officers is a distraction imho. So I feel like "trick question" is a deflection/distraction and I have not read anything to even suggest that's the case. It seems like they 1) didn't believe him and 2) lied to cover it up. I have not read anything that suggests the citizen in question answered a question that may have been suspicious but I have read that he was not believed.