That's not just an impression, it's a fact. More than once have I seen commenters suggest (with what I assume is a straight face) that amateur bloggers can effectively replace "the media." A similar position I've seen frequently is that science reporting is worthless, and individuals should just sift through the all raw papers instead (which not even actual scientists do).
The best bloggers can do is substitute for opinion writers, since having and expressing an opinion is really a solo endeavor, regardless of where you do it. Pretty much everything else needs a bigger team and more support structure.