That separation did good things like give people a reasonable expectation that what was presented was more or less unbiased facts. Now more than ever, we don't have that. If one is smart and looking for the truth, you have to cross-check with other sources.
One says you might have had to do that always but, now everything is suspect. I don't mean that conspiratorially, I mean I have to think, "Could someone profit from me thinking this is true?"
For everything. I wouldn't be surprised if someone manipulated the weather reports slightly to raise sales of coats and umbrellas. It'd be so easy and could make a significant difference. "Your Weather Report is brought to you by Burlington Coat Factory"