I think the opposite is true. An experienced engineer not as versed in interview prep might hear the question to design something, and go ahead and show how they would design it based on their experience doing it in the real world.

The leetcode grinder would almost certainly ask clarifying questions since it’s heavily emphasized as part of the rubric in pretty much all system design interview prep material.

Of course, the non leetcode grinder might ask those questions, but even the social cues that you’re allowed to ask clarifying questions might not be understood.

In my experience, I’ve seen a lot of people say that systems design test the seniority of a candidate, but then stick to a rubric that the leetcode grinder has memorized and the senior engineer might miss several important points on despite having the experience because they didn’t understand all the unwritten rules of the song and dance.