The wider context here is that the TikTok ban had significant support on the grounds of, what politicians and Zionist lobbying groups called, "anti-Israel bias" and "support for Hamas". Not just the explicitly stated "China Bad" motivations.

https://www.nbcnews.com/tech/social-media/tiktok-ban-israel-... (Note: Article from November 2023)

The opposition to TikTok on grounds of it's Chinese ownership had been on a slow burn right up to October 2023, when it picked up steam in the wake of the early response to the Gaza War. US politicians were furious that the youth weren't buying the Bipartisan Approved Position(TM) on Israel.

Considering that major world organisations, even holocaust remembrance ones, are now calling Israel's actions genocide, that fury has aged like the finest bottle of raw milk.

Hence:

> and the implication that their intent surely must be to issue pro-Israel propaganda

That is indeed the implication made, for the reasons above, I don't think it is unwarranted.