You realize that WebGPU has not shipped in Safari right? There's a reason it's still behind a developer flag. It's not finished.

Construct 3 doesn’t work with WebGPU disabled either. I’m sure it has official support for Mobile Safari, just not official enough to work when someone visits a Construct 3 experience.

I’m not dunking on the engine. It’s just to say, well this is what graphics programming in browser is: making shit work on mobile Safari.