I think thats the issue when these conversations arise. Its all well and good being like "im a pro" "I do this" I do that" literally means nothing to me at all. People think they are power users when in reality they arent... People get very defensive and their experiences are the only thing that matters. It makes sense because thats all they need it for... if it works great.
I think its difficult because until you really hit the wall where machines that are sold as high end video/motion/3d tools and then you put them through their paces with difficult projects and they struggle its incredibly frustrating. A project that can be fluid on a higher end machine and isnt on another machine literally costs days in time.
The fact is yes still images, not a problem these things will blaze it. When you genuinely are working on very intensive motion graphic projects and the machines arent responsive enough to get the work done and have used machines that are far more powerful you understand and what apple offers is hugely hugely lacking for that whole industry. At the same time these sorts of machines are far more niche and cost far more than even a high end iMac pro and its very easy to put the apple bubble around you and start the scaremongering PCs are rubbish they wont work and you will have more downtime.
So what do you do when Apple doesnt sell a machine powerful enough? There is no alternative at all! Nothing. Unfortunately pros have had no choice at but to move on. Like others have said you cant just wait, that doesnt make you money.
This is generally my main gripe, as a modern creative singular fields are a dieing art and if you can manage to make a living doing that one art then hats off. At the end of the day I find myself working across multiple disciplines more and more. Not just expectations but because one design needs to work across so many different outlets. Graphic designers arent just making 2d print media anymore and have to be multimedia designers, photographers are being forced into videography etc etc its just the expansion of the market and the expectation is a lot higher than it was 10 years ago.
For example I made this for Globus in the UK. They are a global leader in PPE manufacturing and I work as a graphic designer, photographer and videographer for them. This project took over 48 hours continuously to render on my mac pro. Cinema 4D was an absolute pig and was so slow during its creation it was hugely frustrating.
When I bought the Dell workstation I ran the same project and it completed it in 5 hours.
The iMac pro will probably output that in a similar time and do all the things I have said above because it is an excellent machine.. Like I said media is advancing more and more and if you dont move with it you get left behind, having to swap the whole machine out for a more demanding job is not my idea of a pro machine pros need more flexible machines.