Doesn't seem to be bots. Maybe it's just that Japanese phonetics are so limited, that any word that has a possible pronunciation in Japanese becomes a Japanese word in their mind. Funny pattern matching error.
I have also on (very) rare occasion used Japanese to clear up a pronunciation thing, because of the variety in English. The one that mentions Google Translate I figure probably was doing that, which I kinda took as "...maybe it could be..?" and just wanted to clarify something in my original comment, which I figure added to the confusion in further comments. I tried to keep it clear I wasn't sure it actually was Japanese but I guess that didn't stick.
