That's just because people love the language enough to evangelize.
20 years ago it would have been:
"Show Slashdot: here's my cool desktop"
vs
"Show Slashdot: here's my cool desktop running Linux"
20 years ago it would have been:
"Show Slashdot: here's my cool desktop"
vs
"Show Slashdot: here's my cool desktop running Linux"
It's a hard language, so the author of the program likely has at least some amount of prior experience to build off of, and to build anything truly substantial with it you have to have a deeper understanding of how the code actually works than you do with some other languages.
The language does do error handling, type validation, memory safety, and null checks really well. So, it's safe to assume that the app may have fewer bugs than it's counterpart written in, e.g., C or JS.
It could still be shit, of course, but I imagine the average quality of an app written in rust would be at least a little higher than thay of apps written in many other languages.