I want to talk to someone at Adobe about my 1000s of photos in Flash.

Oddly enough, my job before coming to Adobe to work on Flash was at Simple Star, making PhotoShow (which later got acquired by Roxio). 

It's been about 15 years since I've worked on it, so I imagine stuff has changed.  The way that PhotoShow worked when I was there, was that when you loaded an HTML page with your "show", we would deliver a .swf file that interpreted an XML file with the details about your photos, transitions, stickers, etc... and put it all together as a rendered slideshow, an .xml file that actually had the data about the show you designed, and then we served all of the images as discrete .jpgs, and audio as discrete .mp3 files. 

Assuming you have a working Flash Player and you opened the developer tools in your browser, opened the network tab, then loaded one of your shows, you should see all of those images load.  You could then click on each one and save it into a folder.  It's annoying, but it would work.

You might also contact PhotoShow support to see if they have a newer version that's removed the Flash dependency, or if they have a better data export option.  It wouldn't be that hard to rebuild the core player in HTML5 Canvas and JavaScript.  If they still have sufficient paying customers, I imagine they'd have made the investment to keep the revenue stream going.

Also, to be clear, we're not replacing Flash.  We announced (in tandem with all of our browser partners) back in 2017 that Flash Player, and browser support for plug-ins in general, were going away at the end of 2020.  We gave the industry three years of lead time to migrate to modern technologies.

Here's the original announcement fron 2017, with background: 

https://theblog.adobe.com/adobe-flash-update/

Here's the consumer FAQ: 

https://www.adobe.com/products/flashplayer/end-of-life.html