Comment by duskwuff

> It's hard to say if it would've run into the same issues. For one, it would've been easier to port native GCs...

WASM GC isn't just about memory management for the WASM world; it's about managing references (including cyclical refs!) which cross the boundary into the non-WASM world. Being able to write a GC within the WASM (or NaCl) world doesn't get you that functionality.