Didn't know you had to be published/interview people in order to know about journalistic principles.
But if that's the case, I have been published, I have interviewed people from/related to the game industry. And no, I will not say where. I am not calling myself a journalist, but I sure as hell know than other than OP ED pieces, a journalist is supposed to keep their opinions out of their news articles, interviews and reports.
So yeah, keep approaching a possible interview with that kind of attitude, but don't expect others to see you as a proper journalist.
I posted this before, but seems people like you need a reminder: