It's not the same as all possibilities. It's just arguing that you should avoid having an AMP and a regular version of every piece of content on your site. You

It's not the same as all possibilities. It's just arguing that you should avoid having an AMP and a regular version of every piece of content on your site. You should either go all in or avoid it entirely. And if you must provide an AMP version along with the regular one, only do it for the most important pages. The sentence is formulated really unfortunate, though. I also wouldn't approve it.