This issue is regularly floated by both "sides" of politics, usually to much criticism (on both technical and moral grounds). It is like the Hydra - chop off one head and it will simply grow two more. This time the policy announcement is especially reprehensible, coming 48 hours before an election which is all but decided in advance and buried in fine-print.
No doubt the new government will announce that it has "a clear mandate" to implement the filter as it was tucked away in their last-minute policy announcements.