One thing I noticed watching some Japanese youtubers playing games like Minecraft is that some of them had figured out how to use the IME to input Japanese kanj

One thing I noticed watching some Japanese youtubers playing games like Minecraft is that some of them had figured out how to use the IME to input Japanese kanji/kana into the chatbox, but others just communicated in roman characters directly. So you'd have conversations in text-entry romaji, that they would have to sound out verbally when they received to understand what it meant. e.g. A: [in minecraft chat] "rapisurazuri kudasai!" B: [talking to themselves] what is that? ra-pi-su-ra-zu-ri-ku-da-sai... aah, I understand.