Perhaps they are annoyed at the attack surface bloat of modern browsers and operating systems. I've been thinking of switching to w3m/links/elinks/lynx.
Right, but if you're worried about security, using a browser that's no longer maintained isn't the answer, so doesn't explain old versions of graphical browsers.
This article is about pre-rendering a webpage to png, so anyone using a text-based browser would actually find the result even less useful than the original page.