It might come off as a "weak analogy" because it sounds weak to you ... to make the point that there are valid grounds (the epidemic of obesity & diabetes) for Xenophobic Asians to think addictive Coke / McDonald's are part of some sinister plot by the Americans to impoverish them. And that line of reasoning is ludicrous, or "weak" as you put it because it is (unless we are Xenophobic ourselves, then it isn't)!

If you desire a strong analogy, do Hollywood, YouTube, Netflix etc, which are banned by the other side citing similar reasons to TikTok, I am sure. But the other side is totally authoritarian and we aren't, right?