I think that's a matter of perspective. Front-end development tools are more diverse because there are more devs working in that sector and there are more diverse needs.
If you look at Windows platform there's Win32, WFP, UWP, etc. On Linux there are Qt, Tk, GTK, and more. Some old, some buggy, some ugly. It's the same thing.
I am not in the niche. I do all kind of development with multiple languages and tools. But I am trying to choose tools that work for me, not the other way around. For Windows desktop Delphi is unmatched in my opinion.
