I trust alternative media because they show me the primary sources they rely upon. Mainstream media basically never does this; gatekeeping access to knowledge is, for whatever reason, a key part of how they operate, noticeably imposed upon all their writers. The following things are, as far as I've witnessed, universally true of every mainstream media source out there:
* If they report on what's said in a new government report, they'll avoid including a link to it or even including its name, to avoid you Googling for it.
* If they attack a politician over a short snippet of a speech he gave, they'll only embed the snippet and won't link to a video showing the full context, thus ensuring you can't verify that the removal of context hasn't changed the meaning.
* If they report on an academic paper, they won't mention its title or link to it, nor report on any of the raw data or explain its methodology - they will report only the conclusion (or their spin on it)
The alternative media is more trustworthy, because it has links, which means you can independently verify its claims. The mainstream media is unique in having a strict standard of not permitting rigorous substantiation and referencing of claims made in its articles, maximising the difficulty of auditing them for truth. They deserve the distrust the public directs at them for that reason alone.