Well China has banned FB Twitter, Google etc. a decade ago
That's true, but the start of "they block our apps we should block all of them" seems to weirdly be china, but the argument is usually presented as a general obvious conclusion. I am very much in favor of banning apps that violate local laws and unfortunately that's what china does. So it's more the laws I don't like, not the ban in general. But this prevents me from accepting those bans (edit: banning them because they are chinese) in my (non-us) country.
> The CCP can't complain to get a taste of their own medicine here.
Sure they can. Everyone regularly complains about receiving their own medicine, including china and the us. But that's not the point.
The point is holding yourself, your nation and other nations to your actual standards, not to some arbitrary standards of others. I want my government to enact regulation that benefits the citizens, such as privacy regulations, and enforce it, I don't want them to use nebulous national security regulation to do whatever they want.
If possible, it should be clear what the requirements are so people can fulfil it. I really dislike arbitrarily enforceable laws where possibly everyone is in violation.
I do agree with that, these kind of retaliation laws have to be codified and be precised. But that's not something uncommon outside of tech, countries will implement trade sanctions if they also face trade sanctions from other markets. Banning apps owned by the CCP seems a fair approach regarding on how they behave.
And decisions like this do help to hurt the CCP, it reduces the reach of Chinese tech companies.
In fact ByteDance already has blockbuster app killed by Chinese authorities.
And as the private investors, well, they will soon learn how the CCP works...