That's a really weak argument. Let's clarify:

1. An anti-free-speech government that arrests people for discussing certain topics that controls a company that seems not to show certain topics much.

2. The company doesn't make any claim it's not filtering out anti-china topics.

3. We find strong evidence that platforms don't match.

4. You want to throw out all evidence and blindly presume complete innocence because you think 1 of 10 topics on instagram isn't easy to explain?

Feels hard to believe you could come to that conclusion in good faith.