Officially no, but the wording on the FAQ says it's the developer's job to take it up with them to resolve it. So it's clear they don't have any safeguard and only after you're affected you can talk to them lmfao.

Does the Unity Runtime Fee apply to pirated copies of games? We are happy to work with any developer who has been the victim of piracy so that they are not unfairly hurt by unwanted installs.

Same thing goes for "install-bombing":

We are not going to charge a fee for fraudulent installs or “install bombing.” We will work directly with you on cases where fraud or botnets are suspected of malicious intent.

So not only are the fees outrageous, but now devs are responsible for making sure this whole system isn't being abused. It's not gonna be long until people figure out how the install count is updated, and will proceed to weaponize it lmfao.