I can assure any doubters reading this piece that flash fiction isn't intrinsically easy to write, at least not well, any more than, say, miniature portraits are easy to paint, or tiny clockwork mechanisms for wrist-watches are easy to design and build.
Don't get me wrong: there's plenty of bad flash fiction out there--dependent on cliché and twist-endings--but that's true of any mode of fiction. There is nothing intrinsically stale, trite or undemanding about flash fiction. I shudder to think how much more intellectual effort I'd have to put into writing ten good flash stories, compared with a single story of comparable quality in the 5000-10000 words range.
Rather than simply complain about this state of affairs, I'll make a specific proposal. As far as I'm aware, there is currently no specific award for SFF flash fiction**. I think there should be. I don't know how a new award might be funded or administered, but perhaps the Hugo and Nebula committees could ponder the matter. And while they do that, perhaps they could also ponder the longstanding short fiction categories, namely short story (<7500 words), novelette (7500-17500 words) and novella (17500-40000 words). Are they still fit for purpose? To my mind, there is no intrinsic difference between a long short story (say, 7000 words) and a short novelette (say, 10000 words), whereas flash fiction is rather different in kind: a miniature short story***. In that respect, it is every bit as meaningful a category as novella (a short novel).
I'd be interested to hear what SF writers and readers think about this.
* Some still refer to such pieces as short-shorts.
** Please correct me if I'm wrong!
*** There's no widely accepted definition for flash fiction's maximum word-count. Some would argue for 1000 words, others 1500. I've also heard the argument that anything below 2000 words is not a proper short story.