Merely a matter of taste?

[Wilson Gray]

The plaintiffs list what they'e done for the benefit of the defendant.
The defendant replies:

"All they've done is drive me crazy."

In the context in which this was spoken, I would have expected:

"_The only thing they've done_ is drive me crazy."

Nevertheless, what was actually said somehow seems to verge upon
"correct" for me.

--Wilson

There's only one thing that money can't buy and that's poverty.

--Jack Benny

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