You shouldn’t. Lest we forget, China has banned all American social media companies and quite a few other tech companies. Why shouldn’t the US do the same? Red Note should probably be banned too. The condition to lift the ban? Allow google, facebook, snap, etc in China. Until that day, I don’t understand why this is even a question.
I am fine with the US doing protectionism, it's their choice. But they should own it. Not always play the kings of freedom, with freedom being systematically defined as "whatever is best for the US".
It’s not even protectionism. US is the only country in the world to honor unwritten free market rules. Simply because people here believe in it. All we want is reciprocity. US is not protecting the Googles and Facebooks of the world. No one told the RoW to have restrictive politics that kill innovations to the extent that their best talent rather come to the US to pursue their dreams.