Yeah - it's a tradeoff.
They need that information to actually carry out the service you're requesting of them (namely going around to all these shitty data brokers and going through their intentionally arduous processes to request removal).
In order to do that they need to know the info to query against and remove.
I can understand why someone wouldn't want to do that, but of the available options for this kind of thing I thought it was the best one.