You mean it right, but you say it wrong.
Because the Chinese government doesn’t want you to share information with anyone for 10 minutes.
This is now the only option and China will simply be happy with it. It was previously unlimited in time.
Now I think in terms of security outside of China it also makes sense to not be able to receive random links or files from others, and will remove quite a bit of the annoyance at airports and on board flights where someone likes a bomb threat . send it around via airdrop. It happened a lot this summer, unfortunately.
And if you still want to be able to receive something from a complete stranger who is not in your contacts, you can still do it, but knowingly, you have to activate the option yourself. So I see that — whether or not the motivation was China — at least as a good thing.