Using individual components instead of the whole big framework isn't necessarily a failure. The components are designed to be usable independently.
TinyGlade project started a few years ago, when Bevy's rendering was even more basic. The art style is central to TinyGlade's appeal, so it's not surprising they've built a custom renderer.
https://youtu.be/jusWW2pPnA0?t=3275
Using individual components instead of the whole big framework isn't necessarily a failure. The components are designed to be usable independently.
TinyGlade project started a few years ago, when Bevy's rendering was even more basic. The art style is central to TinyGlade's appeal, so it's not surprising they've built a custom renderer.