The journal of old and new science fiction, fantasy and horror stories, poems, essays and reviews.
You raise some good points. I read a lot of the newer work (although it's mostly fantasy rather than sf these days) because publishers send me review copies, and hey, it's free books. I don't mind posting a review in exchange for a book. Left to my own devices, I tend to gravitate towards science fiction written during the Campbell era. Maybe that's an artifact of having read these writers in the reprint paperbacks of the 1970s and early 1980s. Still, I get more reading enjoyment from those stories than from much of what is published today.
There are some modern writers who write with the attitude and verve of the Campbell era; most notably (and this is a very hasty and incomplete list) David Weber, Eric Flint, John Ringo, Alistair Reynolds, David Brin, Gregory Benford, and Lois McMaster Bujold. Many of these are published by Baen Books, and the ones who aren't are mostly published by Tor (the publishing company has a rather different philosophy than the website). Science fiction is actually in something of a Second Golden Age; the lit-critters have so far been rather unsuccesful at shutting it down.
There are also a fair number of self-published writers from every demographic who seem to be writing space opera, military sf, steampunk, etc. with a fair amount of verve and sales. (Hugh Howey seems to have joined the greats already, or at least the darned good.)Now that there are things like Amazon Unlimited that allow unlimited reading on subscription, I assume that readers will be able to survey the new frontiers of the self-published field, and begin to point out who is great.