I know a person who is maintaining a few sites she built in like 2005 with a version of Dreamweaver a little older than that, so never dares to upgrade the Dreamweaver version.
The whole thing is terrifying and horrific to me, but they keep paying her to do the work so she's fine with it.
I actually just finished redesigning my site with static HTML using Dreamweaver 2004 on an iBook G4. Why? Why not? My little brother passed away a couple years ago and I inherited his iBook, and I have decided its going to be my personal laptop from here out even if all I use it for is VNC to one of my other computers. Plus, as mentioned above it can still run all that delicious old Mac stuff from System 7 through OSX 10.4.xx and its all "abandonware" now, yet in many cases still VERY usable.
I cut my teeth using Dreamweaver for tripod and geocities sites way back in the last century and have fond memories of it. It was great for templating headers and footers before I discovered PHP, which I have less fond memories of, but that's another story.
With all the churn in certain areas of tech, it's easy to forget how much stays the same.
I was using Macromedia Fireworks MX from the early 2000's right through about 2013 to do graphics for sites I was building people on the side.
I used it while it got several version updates, Adobe took it over and updated it for five or six years, and then discontinued it.
Meanwhile I was still using the old version to make beer money.
I only quit using it because I finally admitted I kind of suck at graphic design. Besides, there doesn't seem to be much need for graphic design in much of the modern mobile-first, material design world anyway.
I bailed on the whole thing and have been sticking to back end at the day job these days. Things move at a slightly less hectic pace back here for me most of the time.
You would just edit the html pages lol. I still use dreamweaver for the visual editor if I need to copy and paste from a pdf and want perfect html. No one has made anything like it. No current editor has a quick sftp that allows you to connect/edit move on.
I mean .. it's just a static HTML editor at that point (maybe it does some includes/builds to simplify things). If you're just pushing out static content, you don't have to worry too much about outdated libraries and security issues, so long as the web server it's being served from is maintained and up to date.
"Dreamweaver Templates" was basically an early static site generator that made it really easy to design and include site-wide or section-wide elements.
Yeah you could always edit the individual files that it outputted, but in some cases people were using this system to manage sites with hundreds or thousands of pages. As recently as a couple years ago it was how the natural history museum in DC managed their site content.
The whole thing is terrifying and horrific to me, but they keep paying her to do the work so she's fine with it.