My new kink is responding to recruiters who ask for my current salary by asking them for the total comp for the role they're recruiting for.
It's purely for entertainment, of course - I won't even meet with them after that. A company that asks your current salary is asking to find out how little they can pay you. They are seeking to create and exploit a superior bargaining position that results from unequal knowledge - they know how much you make and how much they pay, but you only know one of those things. And that's how they treat you before you start working there.
I doubt that companies who do this can be persuaded to stop.
But if I were a VC, it might give me pause to learn that a company in my portfolio does this. Knowing that the make or break comes down to people - or at least suspecting that might matter - might make me worry about a company that rejects valuing the one single resource that decides the whole ballgame.
Anywho, my nonsense aside, the object of the game is to see how many messages a recruiter will respond with before giving an actual compensation number. An unsolicited phone call counts as two messages. My current record is 7.
Work is a negotiated exchange of labour for money. Both parties try to negotiate and get ahead, in ways benign and not benign.