What exactly do you propose is foreign interference? Did the CIA infiltrate the regional government and implement the lockdown measures which empowered the fire incident to happen? Did they somehow hire 10,000s of actors to show up and organise these protests? This is the problem with CCP mouthpieces, as well as other cases like Iran, they never point to anything concrete and instead just try to deflect to the United States whenever something they don't like happens.

Conversely it's pretty easy to point to what the Russian interference in the 2016 election was. They set up spam internet camps in places like Belarus and Thailand, paying people to propagate fake news and misinformation. There have been massive FB pages with millions of followers that have been outed as set up to do this. Even if US intelligence is somehow amplifying the calls on Chinese social media, which is probably impossible given that they are a locked down system unlike Western platforms with harsh government control of moderation, that is completely different from the analogy you are trying to make.

They are treated differently because anyone with a brain can see that they are empirically distinguished from one another.