I don't think anyone would know you weren't a native English speaker if you didn't mention it!
What you describe with people saying random words in the language makes me cringe; the small number of English-speakers in my DF very occasionally do it to Japanese players too and blurt out anime character names, Japanese foods, or weird (and unusually inappropriate/misspelled) Japanese phrases which often just end up sounding offensive and/or borderline racist. It's not meant that way at all; the speakers think they're being clever and don't understand that people who speak multiple languages are nonplussed by the insane-sounding reactions to their existence. Though I once joined a Japanese party many years ago and mentioned that I was in the UK at the moment only for the reaction to be "DAVID BECKHAM?!" (lol).
I think that a vocal minority of English-only speakers expects special treatment and consideration because they don't realise that they're not always the majority, and this comes across rather abrasively to everyone else. It sounds as though that's happening with some of the French-only community too on other servers. It's really not hard to have a few phrases ready with a translation tool or to learn your way around the built-in auto-translate to be polite, but when people don't bother it sours people on the fun of cross-cultural communications.
