I think the wording is meant to contrast how few Americans actually want it, vs, how much Trump wants it, who, as president, should, in theory as an elected figure, represent the majority opinion of the people. So, they are calling attention to the fact that it’s a low number, but for a different reason than your reading.

17% feels about right in my subjective experience.

…again…

I think it’s a nice tape.

Write that one up for Chief Justice Roberts. He has it too easy IMHO.