How so? I think WASM has major benefits for specific applications, especially for sandboxing, and running things in a cross-platform way. As far as I can tell, it's not that different from what Java and C# do (compile to your own bytecode, run that in a VM), except that you only give it access to specific functions.

While it might be slightly slower than running native code, I think that for certain users those are benefits that they can't overlook.