When people say mainstream media what do they mean? Our Swiss media houses never really excluded any Theorie that could get milked for clicks. I mean why would

When people say mainstream media what do they mean? Our Swiss media houses never really excluded any Theorie that could get milked for clicks. I mean why would they? Facebook did censor a lot, but Facebook can't be considered media. Edit:// isn't it more the lack of willingness to explore outside your bubble before you form an opinion?