Is vietnamese really “too hard”?
Not necessarily. The language is difficult due to the tones, but with consistent practice, pronunciation will get better. Vietnamese grammar is not too complex. Foreigners who speak Vietnamese will usually speak with a distinct accent. However, that’s not a problem if their use of vocabulary and grammar is good. I’ve heard Koreans, Japanese, and Russians speak Vietnamese. Of course, they had foreign accents, but otherwise, they spoke the language extremely well. Practice is they key to success.