I always see "Zatch Bell" fans using the VIZ Media adaptation terms like, "Zatch" instead of Gash, "Kiyo" instead of Kiyomaro, "Mamodos" instead of Demons and so on, and I hardly see anyone using terms referring to the original work.

I understand that most people knew the series from the VIZ Media adaptation, and that some terms are simpler to pronounce, like Zaker instead of ZakeRU, and so that's why people use these terms, but, in my opinion, the VIZ Media adaptation is just more childish and doesn't match the original work quality. Mamodos, for example, is a made up word just to censor the original "Demons" to a childish audience.

Most recently, when they released the Gash Bell movies in bluray, they've translated the Wiseman movie title as "Zatch Bell: 101st Devil", not using "Mamodo" and used the name "Zatch" only because it's more popular now I guess. So why people keep using the censored terms? I don't want to be annoying about it, I'm just curious for why.