Remember, Tennessee, Mississippi and Texas already have similar laws in place in the US, so even a nation with better speech and gun laws is still not immune from the slow descent into technocracy.
If the 'political speech' is not adult in nature, which is true 99.9% of the time, then it can't/won't be blocked under this rule.
Unless of course this political speech is happening on a porn site, or a subreddit that has been deemed 18+. Which I can't see a legitimate reason for.