But you're not asking for sunlight. You're asking for a spotlight. That's what people are saying causes the problems.
If you were asking for sunlight, and everyone's tax returns would be opened for public scrutiny, that would be one thing. But you are choosing a sub-group, and saying, "No, we only want to drag your tax returns out into this spotlight." That's a totally different thing, and that incentivizes a completely different set of behaviors game theoretically speaking.