It's really imperative to observe a few things:
You want new hardware, and prefer Apple building it for you. That means choosing the right one for you, or influence Apple to cater to your needs, or make a compromise in needs, or look for workarounds and alternatives.
- Voice your wants and demands. Not necessarily just here (if this community even tolerates something like this and doesn't qualify it as "just a rant").
But do two other things:
write it directly to Apple (Feedback), and write to news outlets, magazines, blogs, your own pages. It is absolutely superfluous to cry and whine in private only to go out and pay good money for things you do not really want or need or like. Chances that this succeeds are small, but then at least you have tried and if others chime in in significant enough numbers, then maybe…
Apple can see the numbers of sales, but not the non-sales. It can count complaints written to them or analysing reviews and net trends. Writing to them and the public increases the likelihood to have that opinion registered and properly weighted. If buyers rip the boxes off the shelves, you are indeed in an insignificant demographic. If sales slow and negative press increases, any intelligent business will have to adapt, somehow.
If you buy from an online retailer, write a review that list your likes and dislikes fairly. Only praising a product is common, but absolutely uselesss, unlesss you're interested primarily in stock-market shares.
Well written and constructive criticism is the most helpful thing to do. It helps others form an opinion and make a decision. And that includes Apple.
But you have to be patient and wait, for a thing that may never materialise.
Do not buy Apple products you are not and will not be satisfied with. New MacBook Pro is expensive and has a hated Touchbar? New MacBook Air will do performance wise or old MacBook Pro 2015? Then do not buy a 2016 MBP, but the one that does suite you, and write about your decision on a forum, blog etc.
Analyse really carefully your 'musts', mustn'ts' and needs.
In the question it states: "I must use a Mac". And then it lists a few 'reasons' to which I would still ask further: "Why, really?" The specifics are missing, really. Because you might opt for a Hackintosh or a virtualisation solution for almost everything Mac-only in terms of software.
If it's just about the software to be run, then the two alternatives are worth looking into. If there are other reasons like policy or support within a team or company, then you might ask for exceptions.
Try to look into workarounds. Hate the keyboard: try an external bluetooth. Hate the glossy screen… in general, try any hack you find.
Join groups that have a shared goal for this kind of action.
To&From Apple: Want a "greener laptop": work with Greenpeace to exert pressure. Want a "right to repair": support proposals for such legislation. Want a usable keyboard as your last butterfly one failed for the third time: join law suits and write about it.
To&From your work groups: join a union or smaller group that fights for your right to choose the hardware you want, as long as it doesn't hamper the workflow or other policies.