IANAL: It sounds like the EFF recommendation probably wouldn't help prevent it from being used to investigate ad blocking and piracy:

Recommendation: Restrict the definition to "core cybercrimes" like technical attacks on computers, devices, data, and communications systems. Exclude human rights-protected activities from the scope of the treaty to prevent misuse and ensure these rights are not unjustly targeted due to equating cybercrime with any crime using ICT.

Since blocking ads and piracy aren't likely to be directly related to human rights protected activities, and they'll probably stretch the definition of "core cybercrimes" to include those...