I think this is a good measure to even the playing field. Thousands of companies are blocked in China. So why not do the same?
I (an individual) would be happy to see TikTok banned, along with Twitter/Facebook/Instagram/etc, because I see them as vain wastes of time with a sinister twist. But I've also met teenagers, and even been one! So I can guess how they might respond to a government-imposed ban on a new and interesting vice.
And I (a citizen) am deeply suspicious of being told that I must not know something. It smells like corruption and tyranny. The belief that knowledge should be free is tattooed on my soul (and my skin).
Tit-for-tat only works in the absence of moral imperatives.
Obviously, an ad volarem tax (https://en.wikipedia.org/wiki/Ad_valorem_tax) that is a tax that is proportional to the market value of a transaction like VAT wouldn't do anything.
But there are other kinds of taxes.
Eg fuel taxes in many countries are usually per litre, not per dollar of petrol. See eg https://en.wikipedia.org/wiki/Fuel_tax#Tax_rates
Carbon taxes proposals are also usually imagined to apply per kg of carbon emitted. Exactly because there's no prior price of carbon emissions.
Tariffs are set for classes/types of goods/materials/etc... and Kinder Eggs were banned because they didn't comply to a regulation (small dangerous foreign objects contained in the product - maybe other similar products had to be banned as well but those ones didn't reach the headlines).
In this case the decision applies to a very specific company/product and that decision is not based on a rule/regulation/etc..., I think => on one hand it doesn't have any impact on other similar companies/products, on the other hand it scares me that a single person is able to enforce on-the-fly these kind of decisions.