What's the matter with Perl? I don't remember seeing it anywhere near the top-paying programming languages the last couple of years. What happened this year?
Is Flutter/Dart the Ruby on Rails of UI development? I know it may put some people off that we have to use a completely new language to solve problems we've already (kinda) solved, but I believe this time google got it right. The ideas, execution, tooling, and community are amazing. Give it an hour and you'll love it
The web and its ecosystem are huge. The browser is essentially the new OS and no matter how complex and quirky js, react and the rest of the tools are, we're gonna stick with them for a long time. Big technological advances like PWA's, WASM and rendering engines like servo and webrender are only gonna shorten the gap between native and web UI experiences. Look at what happened to the desktop. Native UI development became a niche and even apps like photoshop are now just websites(figma) or electron apps. This is eventually gonna happen to mobile development as well. There will be no need to create native apps for most cases and no need to use those centralized app stores to "install" apps on your device.
That being said the web is not quite there yet and that's why solutions like react-native and flutter exist. I don't believe that react-native is the future. Many people have explained in great detail why the idea and the execution behind RN are just flawed and why it makes development hard and complex. Heck, it doesn't even eliminate the need for native developers. React-native is just a transitional tech we'll use until the web and PWA's become good enough for 95% of the cases. The future of RN is the Web.
On the other hand, flutter and dart seem to solve all of the problems we have with UI development. It's an amazing tech that combines all the best ideas from QT, flash, java swing, delphi and react-redux in one project that is completely free and open source. It's what we've always dreamed existed in the UI world. The development experience is great and designers seem to love it as well. Despite its advantages, flutter is still a huge bet and i can't see a world where everybody writes in Dart.
If I had to make a guess, I'm still betting on the web in the long run and hope flutter captures a small market share among frustrated mobile/web devs and designers. I just can't see react-native anywhere in between.