This needs to be opt-in. If Google’s changing what a user sees when visiting a website, that raises all sorts of legal concerns unless the site’s owner has opted in. From copyright infringement to tortious interference with someone’s business, this idea that the patent just automatically means people can’t open a browser and see your website is just a nonstarter.

I’m sure Google understands this, but the author of the article over at Forbes seems oblivious to a company’s own interest in delivering their content to their audience.

You don’t want your page rank to suffer active WebMCP on your website otherwise we really can’t show your website in the top results.

OTOH in this post-reality dystopia we live in, it's quite fitting!