Japanese has to be spoken timidly

Japanese has to be spoken timidly, like a coward

If it's spoken confidently, like English, it just doesn't sound Japanese

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At Tokyo Haneda airport last Dec, when I came back from Georgia
I saw a non-Japanese male person.....looked an Italian.....arguing with airport officers

Probably about covid restriction issues

He spoke Japanese

A thick accent, yet totally understandable

But it just didn't feel Japanese

He was speaking Japanese very confidently, like he speaks his own language
―No good

He was speaking with various hand gestures & a strong eye contact
―No good

Unless Japanese is spoken
very hesitantly, very nervously, very timidly
with stuttering
with a dead face
with avoiding eye contact obsessively

it just doesn't feel like Japanese