ML training is akin to reading or learning, and licenses do not apply to that.
You’re not thinking past “megacorp = bad”.
Also, If we had trained some A.I. on the Windows codebase and started freely using suggestions given by it I bet Microsoft would scream copyright infringement in a heartbeat.
But could someone else create a W3C proposal that could counteract WEI? It wouldn't have to implementation-specific but rather one or more principles drawing a line in the sand that shouldn't be crossed like what WEI is built to achieve?