I’ve heard, what about it?

He's providing a counter to your claim that censorship and surveillance are somehow more associated with foreign governments. The reality is that the US has long engaged[0] in the same kind of suppression that is portrayed to it's citizens as something that only exists in it's "enemies".

[0] https://en.wikipedia.org/wiki/Censorship_in_the_United_State...

It doesn't follow here. PRISM did not censor anything.

Well, that's a strawman argument. I specifically pointed out that whatever TikTok is to USA, FB/Instagram/Twitter etc. is to the rest of the world. This obviously includes all the spying and manipulation, thus the risk and as a result the need for data collection and access requirements. TikTok is nothing special.