[incompatible]

You are technically right in that most states recognize Taiwan as a province of the PRC. However, describing Taiwan as a distinct country is ambiguous, since "country" doesn't have a strict definition. E.g., it's normal to consider the parts of the UK, the Netherlands, and Denmark to be countries, although they are not independent. It's not much of a stretch to consider Tibet, Hong Kong and Taiwan, or Catalonia, to be countries too.

Edit: if you look at the font in question, it does have flags for England and Aruba, for example, so offering the flags doesn't imply that you are recognizing the places as sovereign states.

[Aeolun]

The parts of the Netherlands are called provinces, and are not sovereign nations.

The larger area you call the Netherlands that includes Belgium and Luxembourg is currently called the Benelux[1]

1: https://en.m.wikipedia.org/wiki/Benelux

[incompatible]

I was thinking of the Kingdom of the Netherlands with its constituent countries:

https://en.wikipedia.org/wiki/Kingdom_of_the_Netherlands

[Aeolun]

Ah, my apologies. I’ve never heard ‘the Netherlands’ used to refer to the kingdom without actually specifying that part.

(And a few times to the 1700’s ish low countries, hence my confusion)