I assume that you are asking whether we agree with these pundits. I have changed your question to reflect that.
If we include the internet as media, I would certainly agree with this argument. There are at least two major reasons for this. First, the population is so much bigger now that there are very few races in which "retail politics" can really have much of an impact. Candidates can't meet any relevant percentage of the people whose votes they seek. They can't even have actual human volunteers call most of the people. Instead, they must reach them through the media. Second, we are much less likely today to belong to big groups through which politicians can reach us. We don't belong to unions as much as we once did. We don't belong to clubs and associations. Again, this makes it so that the best way for politicians to reach us is through the media.