Just wait 5 more years that 80% of the web switch to React / Vue / TheNewHypeSPAFramework and with or without WASM, you will be unable to browse "js off".
The blame here is not on WASM but on the abuse of client side rendering and "everything as an App" when most page are just barely interactive documents.
The Web succeeded where Flash / ActiveX / JavaApplet / Sliverlight failed because:
- it was open
- it was document oriented.
And that we tend to forget a bit too easily about it.