If this person paid attention to Harry Potter (which let's be real, I'm a britfag I have to legally be obliged to care given I grew up when the books were being released) there's not only a few examples of people coming in with a "My culture is better than yours" (Visa vi, Book 4 is full of it with the students from other schools spending all day shitting on Hogwarts while the Hogwarts students do the same back), this is an exchange student from another country and most exchange students (or even foreigners in general from anywhere going to another country) will almost always espouse how "Our culture is the best one" when they enter another country when they see something they're not familiar with or used to, we only have to watch 90-day-fiancé and other TLC shows of Americans going abroad to know Americans do it all the damn time. Back on point though, she's from a country where wandless magic is the norm (We are aware within the lore that it's mostly the western countries who use wands as a focus, other countries do not) and that's because wandless magic is more powerful, but it's also more volatile as a result of not having a focus, this would mean a human who can master wandless magic would be more powerful than one who is a master of wand magic ((Which makes it more funny that Voldermort is seen as such a fucking threat to the entire wizarding world when there's got to be some indian dude who can palm-shoot death curses without a word)). So her words do stand up under some scrutiny that's she's not entirely wrong. It's like you being used to driving a sports car then being given an SUV or sedan, sure the gas mileage would be infinitely better and you're safer in a crash, but the sports car is way faster and cool looking.