Install web apps with the new HTML install element

Until I see support in other browsers, I'll assume this is as useful as Internet Explorer Silverlight apps.

Perhaps usable in an entirely locked down corporate environment where centralised IT with "standard desktop builds" and MDM will enforce Chrome use. But without at least Safari support, and ideally Firefox (plus forks), this remains a useless toy to me.

Not answered in TFA: What does it mean to "install" a web app in Chrome?

Browsers shouldn't have an install. Can we stop half-baked HTML XML syntax at this point?

I forsee abuse of such:

    const button = document.querySelector('install');
    button.addEventListener('promptdismiss', () => {
      console.log('User dismissed the install prompt but forcing installation of adware, malware and bitcoing mining anyway');
    });