But that is basically the point of the whole article and this thread, that it's great for proof of concept that morphs into production when needed. If you can deploy in one day that means you can test 5 ideas/week until one catches on (hopefully not that long). Once one catches on, you can actually put more effort into it and optimize it as needed and not the other way around.

You can't try 5 products or features a week on real users. They don't keep up.

Facebook deploys thousands a week:

https://swreflections.blogspot.com/2013/09/this-is-how-faceb...

If you're looking to Facebook for your user experience guidelines, you're going to end up angering a lot of actual users.

While making millions to billions dominating a market I own. So, sure. Other circumstances it would just teach you can experiment more than a few things a week.

Facebook have thousands of products and billions of users. You do not ;)

Now that's a better point. Obviously, the amount of changes are tied to company's circumstances.