TikTok would be put out of business if it was critical of the head of communist party. Google/FB permit anti-Trump content and propagate articles against the administration without blowback.
TikTok is bound to the CCP in a way that has no comparison in the west.
You're mistaking shallow Red/Blue political theatre for genuine (geo)political power struggles. If GOOG were to really challenge the supremacy of the US government, there would be swift consequences.