There's a joke in Brazil saying "Brazil is the country of the future and will always be that. It will never be the country of the present".
WASM is and will always be the greatest technology of the future. It will never be the greatest technology of the present.
Wasm is one of the best solutions for running untrusted code. Alternative are more complicated or have limited language choices.
WASM enables some pretty cool apps in the present, though. I think Figma heads the list.