Hi, there! Your comment is charactaristically
un-Taiwanese, starting with the word "boba". That isn't the word people use for it in Taiwan (either in meaning of the characters or the sound). Most people don't understand boba (波霸) and I personally never encountered the word until visiting North America. In Taiwan, it's 珍珠奶茶.
> "people who eat rice or noodles at almost every meal" is not only a problematic and reductionist characterization"
Taiwanese people rarely talk like this either. In fact, the charactarisation you've quoted is one I repeated from national media. Furthermore, left-wing language police and phrases such as "problematic and reductionist" have yet to enter mainstream Taiwanese discourse. Quite the contrary, it's too far in the opposite direction.
Two pieces of anecdata: When commenting on how mannequins in Ximen are all white, except for the ones showcasing athletic wear, which are black, I've been politely told to piss off. Similarly, when I complained of a pub's unapologetic and blatant Nazi decor, I was told that I "think too much".
Operating on the principle of charity, I will assume you are Taiwanese and either live there now or did in your formative years and not a North American with little experience with the culture or local media of Taiwan who simply feels entitled to speak as an expert and scold strangers on the internet on the basis of your race. That would be problematic indeed.
Here's a quick way to understand where this generalisation came from: Simply walk into several local restaurants and look at the sections on a menus. Or try avoiding rice or noodles for even a single day when eating with your fellow Taiwanese over the age of 30. Yes, diets are changing and to the detriment of everyone's health. No, it's not impossible to see high level general differences between them and those in the west or differences in typical physiques or clothes sizes sold in typical malls.