These two sentences really need to be next to each other more.
Not everyone is exactly identical. Not everyone gets carpal tunnel, but some people do. The people who don't can just go on doing whatever, the people who do have to change how they type or suffer permanent nerve damage.
In general, if someone is experiencing pain from using a computer, it is incredibly bad advice to just say "oh, you'll get used to it" or anything like that. It indicates that something is wrong. Maybe they need to change how they type. Maybe that keyboard or mouse just won't work for them. But if they ignore it and keep using it without changing something, they can be permanently injured.
There's definitely keyboards which are more likely to work badly for people, or more likely to work well for them. The super-thin keyboards on recent Macs have gotten a lot of positive and negative feedback, because they're very far outside the usual design envelope for keyboards. That means some people really like them, and others really hate them.
And advising them to just "adapt" is pretty much reckless. Please leave the advice on ergonomics to people who have more experience with it.
I'm using mine 9-10 hours each day as a coder, absolutely loving it, typing is much faster and no finger aching.
I don't get some of the responses here. This is supposed to be a pro machine. Do people expect pros to lose productivity while they "get used to" using a keyboard? ("Sorry, I can't edit that video today - I'm practicing on my new keyboard.") Especially when the only reason for the keyboard was to make the whole thing a little thinner.
Unless Apple does a 180 degree with the next MB Pro update (and the promised desktop updates), I'm afraid many will regard this as the time Apple jumped the shark.
I've said it before and I'll say it again...
Pro means Apple's top of the line notebook, i.e. better than the MacBook. It is a brand name, just like Air.
Pro does not mean for professional use. At least not in recent years.
It is a relatively powerful MASS MARKET notebook. Nothing more.
It's not some coined super computer for industry professionals.
Whether people choose to use it for their professional work or not is completely irrelevant and a personal choice.
The fact some 'professionals' think this is a laptop designed solely for their use is laughable. It's mass market, Apple wants EVERYONE [Who is stupid enough to pay their premium] to use it.