I am not an academic, so take my advice with a grain of salt, but I would simply reply that you cannot share data before publication, but they certainly can see the published data once it is public, and you could answer questions at that time.

Other than that, I don't see anything that implies retaliation. If I owned a product and people were potentially going to publish negative facts about it, I'd be asking for information, too. Not because I want a fight, but because it is simply good practice to understand people's concerns about your product, and have an opportunity to fix the problems.