That is a good question. I'm not 100% sure about this. But I don't believe this is how DVMs work. A DVM only uses your data when you give it some as an input.

Additionally, NOSTR is a public protocol, so there is little you can do to stop what you post on here getting consumed by these services. Besides not using NOSTR.

I would go talk to the developers of DVMs to get the specifics of how they use data.