It actually seems that Remix just wraps the form element with its Form element that prevents "the way html works" from happening and instead provides a loading/submission state to the UI while performing the form submission via fetch in the background. At least that's what the demo suggests.
I watched the demo and the guy kept saying if this was `form` (meaning lowercase), it would still work, which is misleading.
Honestly I don't see anything exciting about "supporting" form method because that's such a broken and limited way of doing UI. The assumption that every time you submit a form, it results in a request, or that the request is exactly what you put in the form, is false. Just because something exists in html does not mean it's the right way to do thing.
