There's really no such thing as video game journalism. What you're calling that exist solely because of video game companies advertising budgets and marketing departments. Many of these guys get their games from those companies and agree to their embargos and NDAs. They're just another form of paid advertising. The publications they write for exist almost solely because of gaming companies and gaming related products advertising in them. Even YouTubers who are given free copies of games, to me that's all marketing and advertising.