What, really? What happens when you plug it in? Does it tell you that you can't use it? Does it lock you out? Does it brick the phone?

Ohhhh...you meant that you have to get an adapter. Of course you can plug the phone into the new MacBook. The only thing that might be absurd is that you might need an adapter to plug it in but, in reality, there's nothing that you'd really need to plug it in for anyways except to charge it and you get a power brick with every phone.

To build and deploy an app from Xcode to a phone, it must be plugged in.

For how much money the app ecosystem brings Apple, they sure don't throw the developers many bones.

While I agree with your sentiment, developers are a very, very small subset of the population that uses Apple products.

It is completely absurd and user hostile that you need to buy an adapter to plug it in.

I charge my phone in my laptop often.

The phone comes with everything you need to charge it. It is neither absurd nor user-hostile. Inconvenient, maybe. Annoying, yes. Anything else is an exaggeration.

I mean, you're pretty wrong about this, but that's ok.

How am I wrong? The phone comes with a charger and a power block. Unless you want to clarify, your statement means nothing.

Yes, you've to get an adaptor, but when I've invested thousands into their ecosystem there is a certain level of expectation that their products work integrate seamlessly without such hassles.

They do. You don't have to plug in an iPhone to the computer to do anything, unless you're a developer. The majority of people using the iPhone and the new Macbook have no need to plug it in.

PS, most of us here are developers.

Of course and that includes me. We need to get better, though, and realize that our needs are not representative of everyone that might purchase a tech product.