Flash and AIR are still flagship products at Adobe. These tools are actually updated more frequently than ever before, probably because developers using these platforms are reaching record numbers, and Adobe can see that in their Creative Cloud usage metrics. Their deliberate strategy of killing the plugin on mobile to pivot their focus into AIR must have paid off. Adobe's development process for Flash and AIR used to be a bit opaque, but they now release new public betas multiple times per month, listen to requests for changes, and disclose the projected development timeline for new features.
I'm sorry if the spirit of the article resonated with people here who hate Flash, but it is utterly vapid clickbait. It's a tired exercise in kludging together derogatory illustrative phrases to paint the chosen target in a bad light, with nothing driving the negativity other than the author's wishful thinking. The author actually admits he has nothing to support his title when he states "this story isn't about how or why Flash is dying: It's about why we have to remember it" and proceeds to spend the next 13 paragraphs whining about how sites like The Wayback Machine haven't archived enough SWF files.
The title (which the article does absolutely nothing to even attempt to support) implies an urgent and imminent threat to the existence of Flash, that perhaps major desktop browser vendors have unanimously agreed to ban the Flash plugin or that they decided to get rid of plugin support altogether. Of course, this is ridiculous, and as long as desktop browsers still support plugins, Flash is not going anywhere.