My son figured out free VPNs when he was 8-9. This is only stopping adults.
In the era of LLMs this is even more true. Every single chatbot I tried (DeepSeek, Grok, Claude, ChatGPT) except ChatGPT immediately gave numerous and detailed instructions on how to easily bypass the bans. I'm sure one could trivially push ChatGPT outside its love for big brother as well, if they cared to do so.
It's not clear to me who exactly such bans are effective against, and to what end. Obviously the government gains an immense amount of power so they're going to love it, regardless of its efficacy.