The iMac Pro isn't a stunt. If there is a shake out later after the Mac Pro is introduced and both can't hit their numbers the iMac Pro will probably last longer than the Mac Pro. As an extension of the iMac it has economies of scale on several major components with rest of iMac line up.
Neither one of these are going to be a major driver of Mac division ( let alone Apple's overall) revenue or volume numbers. It isn't a profit center major driver but they likely are quite profitable. Apple's baseline 25-30% markup is all over these machines.
I don't think any of this is mutually exclusive. It can be both something Apple does for PR and something where they won't do both an iMac Pro and a Mac Pro.
Mostly what I'm addressing here is people saying:
1. Apple does everything based on shipping large volumes and/or making large profits
2. Why doesn't Apple do something that would make them a large amount of money?
The reason 2 doesn't happen is because 1 isn't true.
The Pro line existed because Steve Jobs had a bunch of friends that needed pro hardware (like Pixar.) Regardless of profits, he wanted pro shops (again, like Pixar) to be on Mac hardware because it was personally important to him. The sales numbers didn't matter as long as he didn't have to see PCs in places such as Pixar. That's why even though Steve Jobs was a design and simplicity nut, he was willing to go along with things like PCIe slots. His customers/friends told him they needed those and he delivered.
That's why posts like this...
I dont stand on Peter's asumptions, since he just make this video for fun, but I love his way to tell us few facts about Apple some people seems forgot: the Cheese Grater was not an Apple product with Apple DNA, jobs hated this fact, and we know Apple's dna: propietary/locked/beautiful.
...are pretty rubbish. Yeah. Jobs wasn't big on upgrade slots. But he was more interested in delivering what his friends in media creation wanted. That was Apple's DNA at the time. There was a lot that Jobs wasn't big on but still went out the door because he could be reasoned with and wanted to serve his customers. Jobs would build a Mac with PCIe slots so Hollywood could make a movie on Macs because that served his ego.
Remember the first thing he did with the pro Mac line was redesign the case for the Power Mac G3 to make it even easier to upgrade because that's what his customers wanted. This is at the same time he killed slots on the AIO line, but he realized he was selling to two different customers with two different needs.
Post Steve? Projects that get done are the ones Ive cares about. Ive does not care about an xMac. Ive does not care about a new Mac Pro every year or expandability. Ive does not care about actual pro grade laptops. Ive does not care about the Mac mini (boring!) Basically all the projects that Jobs cared about because he wanted everyone to have a Mac, Ive does not care about.
Meantime Ive has plenty of projects that probably are not big sellers, but exist because he wanted to do them. Hi HomePod. Hi iMac Pro (ooo shiny black iMac.) Hi Apple Watch.
If you want to understand how Apple works, don't look at profits or sales numbers. Look at if it's something Ive would like working on. (Anything gaming Mac oriented lol no...)
The best hope for the Mac Pro, is that Tim got a big pile of feedback from actual pro customers, and is keeping Ive as far away as possible, or is setting pretty strong ground rules. Basically Tim has to take the role that Steve Jobs used to take of representing actual customers.
The reason the entire Pro Mac line is so endangered right now is because "Pro" is not a design goal of Ive. Thin, light, and as few ports as possible is an Ive goal. It has nothing to do with sales.
Don't treat Apple like a company of engineers. That died years ago (of no fault of the engineers.) They're a design company building concept cars. If the iPhone didn't exist keeping things going they'd be in a world of hurt right now.
My assumption with the next Mac Pro is that, because the project was started due to customer feedback, they're going to actually value that feedback. But that's just an assumption.
Edit:
And before someone says something stupid, "Apple's DNA" is not constant. Apple under Jobs was a different company that Apple is different than Apple under Tim/Ive. Jobs and Ive did not always see eye to eye, don't assume they are the same.