When Americans speak Japanese, does it sound rude or informal?

Question:

Answer:

Rude or impolite? No. I think people try to be tolerant of foreigners Japanese...
Americans/Westerners vary.... but English-speaking people, especially those who have NO background of second language, seem to struggle the most having stronger accent.
Spanish, Italian, Slavic people sound fine because their languages have clear vowels (a e i o u) or R like Japanese do.