Well, since you're so ignorant of newsroom bias, let's make sure you actually do know.
Mainstream media (MSM) is a term used to refer collectively to the various large mass news media that influence many people and both reflect and shape prevailing currents of thought.
...
The term is often used for large news conglomerates, including newspapers and broadcast media, that underwent successive mergers in many countries. The concentration of media ownership has raised concerns of a homogenization of viewpoints presented to news consumers. Consequently, the term mainstream media has been used in conversation and the blogosphere, sometimes in oppositional, pejorative or dismissive senses, in discussion of the mass media and media bias.
- wiki
MSM is often used interchangeably with "legacy media," but the latter has connotations of "old" or "traditional" media that is not online. But if the literal definition of "mainstream" trips you up so much, because you're unaware of its current use (or you're just being needlessly pedantic), I'm happy to use "legacy media" as detailed here:
“Mainstream Media” referred to major newspapers, TV networks, and radio stations that dominated public discourse. These institutions were seen as the primary sources of news and information, trusted by the majority. However, as digital platforms, independent journalism, and social media grew, the authority of traditional outlets eroded. The term “Legacy Media” emerged to emphasize that these institutions are no longer the uncontested gatekeepers of information.
The internet disrupted the media’s centralized power. When news was limited to print and broadcast, large corporations controlled access to information. But with digital platforms, information became decentralized — anyone with a smartphone and internet connection could publish news, challenge narratives, and reach an audience. “Legacy Media” conveys that these old institutions are struggling to adapt in an era where public trust is shifting toward independent sources.
Over time, the public has become more skeptical of media narratives. “Mainstream Media” once implied broad public consensus and credibility, but the rise of alternative voices exposed biases in reporting. The term “Legacy Media” carries a critical undertone, implying these outlets cling to outdated models of influence, rely on establishment-approved narratives, and resist change. This shift coincides with fact that traditional media serves corporate, political, or ideological interests rather than objective journalism.
- https://seobrien.medium.com/people-have-...200c8abe3a
But I assume you knew I was talking about outlets like ABC, CBS, CNN, BBC, etc., right?
As you can see above, these are the old mainstream media that are now distrusted as not being objective journalism.
But you're so gullible, so you probably still trust them implicitly... blissfully unaware of even how the term "mainstream media" is used in an age where few trust corporate media.