I would argue that "European cuisine" is closer to "Chinese" or "Indian" cuisine in scale of diversity as the parent comment mentioned. The other two are just far less discoverable, at least internationally and possibly domestically as well.

That's precisely the point. China is about twice the area of the EU and three times the population, so talking about "chinese cuisine" makes about as much sense as talking about "european cuisine", which, to western eyes, is obviously nonsense.

Why would area and population matter?

On that basis we could conclude there are 2-3 times as many languages spoken in China than in Europe.

There is a Vietnamese sandwich chain that calls their sandwiches with cheese and mayo "European". So, yeah, I do think some people have a concept of "European cuisine".