As someone formally learning Chinese, I'm starting to suspect that nothing can ever be a 'perfect' translator.

AI is definitely good at it, and you can usually get across like 95% of the meaning. But there are so many turns of phrase in every language, with no analogy in other languages, that have nuanced meanings, with historical, cultural, and modern contexts, that takes at least many minutes to fully explain, if not hours.

Even just word order also has unspoken implications that, again, there's just no way to easily translate.

"He's talking about a specific breed of dog and because of the shared radicals it's jokingly and partially implied (but plausibly deniably not) that they're talking about confident walking but there's a double meaning that also means eating fish" is the kind of explanation you might need for like, 4 words of a foreign language. So unless you do the hard work and.. learn all the phrases and word orders and context (at which point you've basically just learned the language), I don't think any practical translation can 100% break down language barriers.

Still, maybe 95% is enough for social media to merge and whatever, I don't know.