Tinfoil hat time! Also written thinking more about the US, where this sort of thing is also a growing topic.
Perhaps this government anti-porn law stuff is backed by people who actually want to dismantle government altogether. And not in a fun Communist way but in a privatize everything, corporate serfdom way.
By pushing for the government to do stupid and unpopular things, they can get people mad at the very concept of government. They can then use that to dismantle things like nationalized health care, fire departments, whatever.