Just because "interviewers routinely ask questions of similar intent" doesn't mean that it is acceptable or should be treated as the norm. It all heavily depends on how your company designs their interview process and guidelines for it.
At every company I've worked so far where I was involved in interviewing, leading and ill-intended questions like that were explicitly prohibited, and that was stressed plenty of times during the interview training. There might have been other things about the process as a whole that I thought could and should be definitely improved, but the "disingenuous questions from the interviewers" was never one of them.
But on the flip side, I've interviewed at plenty of companies (as a candidate) over the years, and I definitely was asked those types of questions at more than one place.
So you are correct, it is common, and it sucks to be on the receiving end of it. But doing that exact same thing back to them as a candidate isn't going to solve your problem. The solution is to not work for companies that are ok with their interviewers asking those types of questions (as much as you can afford to do so).
Think about it for a minute, what are you trying to achieve by asking back those leading and ill-intended questions? If you somehow still want to work for the company, then asking those questions back probably isn't the smartest idea. And if you don't want to work for them after they asked you those questions, then why waste energy on arguing back and trying to make some point.
A no is a no, your outcome of not working for them would be just the same, so why do the extra work[0]. It isn't like they are going to take that feedback earnestly and change anything for you. If you truly want to make something out of it, it would be much better to instead warn other candidates (aka your friends who might think of applying, if someone on HN asks about interviewing at the company, etc.) about it.
0. note: venting out your frustration is a valid enough of a reason.