There are many streams of data. Most are (in my experience) not worth the effort. I mostly listen to people who have said interesting things in the past, and I mostly hear about them through other such people. I inject a little randomness into that process by reading old and obscure stuff, but that's more to view my ideological bubble from the outside than to get a high-quality data source.
I read all the time. I take college lectures on CD and DVD. I love reading HN. But I don't think any of that consumption was based on the celebrity status of a person inside the community. Rather it was based on the perceived future value to me. Projected future value, as best as I can figure, doesn't relate to "notable people" Bill Gates made billions, but if he posted here on his opinion of functional languages I would give him no more or less consideration than if you did. In fact, if you and I had talked about functional languages in the past and I found your comments useful, I'd be more inclined to hear what you had to say over Bill. "Bill Gates" or "PG" or whatever is just a concept we have of people we've never met. I think you'll find once you meet them that they have to prove themselves like the rest of us. Life is like that: what have you done lately?
I read commentary to kick my belief system around. Lots of great commentators out there. But I don't have heroes, and if one of my favorite commentators were to post here, who cares?
I'm probably missing something. Apologies if I'm off-base.
In fact, most of what people say -- even famous people -- is probably off-the-cuff and not exactly geared to your particular situation. Most all communication, in fact, is basically just chit-chat: obscure facts, disagreements based on partisanship instead of philosophy, pot shots at those out of power, praise for those in power, etc.
You can decide to listen to what "smart people" have to say, and that's probably a good idea. I'd just be really careful how I defined "smart people" -- it certainly isn't fame. In fact, I'd turn the equation around backward: I would judge the people to listen to based on their ability to have given me insight in the past, not their fame, fortune, or other crowd-based attribute.