Highly abstract risks just dont seem to register for most people. It was hard enough to get the masses to act in self interest over an existential risk to their health (covid).
I reckon the way to avoid maximum damage from this proposal will be some sort of inoculation - e.g. safe, trusted, easy to use tools that help people work around it. The political angle of attack is worth trying but I think it will fail.
I wish Mozilla worked that angle too - e.g. supporting lineage and microg.