One of the most characteristic parts of communication in Japan is the frequency with which people dish out compliments. Travelers and expats, for example, quickly become accustomed to being praised when displaying even the most basic skills with chopsticks or the local language.
Japanese people don’t just have kind words for foreigners, though, but for each other, too. Modesty and empathy are considered virtues of the highest order, so when someone shows any sort of ability, good manners dictate that you should notice and appreciate whatever small trace of talent can be found, as well as the effort that went into acquiring it while leading what, courtesy says you should assume, is a busy life.
Of course, sometimes these compliments aren’t triggered by the speaker being genuinely impressed, but rather just polite, or in some extreme cases, irritated.