This is a very 'computer programmer' mindset. Most people want an appealing UI out of the box, less need to configure at the expense of configurability.
I'd bet a fair percentage of computer users are uncomfortable resizing windows and rarely/never resize. And a smaller but still significant set is probably unaware that it's possible or how to do it.
Huh? Chrome's fullscreen functionality is the same as any other browser's. And fullscreen hides tabs, so it's definitely not something you want to do most of the time.
No, it's by default a single window experience. You can get it to do standard, classical, utterly terrible overlapping windows. But it's not the default experience.
Not that it matters, really. Narrowing the field is just good practice for readability.
The context of this conversation is how a product should have been done. The devs that make that product want people to use it.
You're suggesting that they ignore part of that user base, based on a claim that people shouldn't browse the internet however is most convenient for them. E.g. by using a computer they already have instead of a tablet they might not. All parts of that reasoning are ridiculous.
