As a Bevy dev - what platforms? We support Vulkan, DirectX12, Metal, WebGPU (with a bit more limited features), and WebGL2 and GLES 3 (with a decent amount more limited features and performance).
There's been no real demand or contributors to improve it, but it's open source so there's no reason you or anyone else could stamp out the bugs https://github.com/gfx-rs/wgpu#supported-platforms.
Besides, for the scale of games currently coming out of Bevy, you should be able to use Vulkan to pipe your game into a PS port.