I think that's the problem they're trying to solve isn't it? There are dozens of disparate applications that together accomplishes what procmon does? I don't know if the linux promon does all of the things windows procmon does, but if it does It'll make my life easier.
I don't think it's largely the developers that would be clamoring for it, it's the people trying to figure out WTF a developer did and how that interacts with the system that may be interested in it.
One tool that integrates all the things that procmon does is valuable in my opinion. inotify, lsof, lsblk, netstat etc all in one combining them in a single time based log is a very useful tool in my opinion. I'll pass judgement after I play with it, but if it's as good as procmon is on Windows then it's not a solution in search of a problem, it's just a potential solution and still useful.
Just because it's from Microsoft (or Micro$oft for some) it shouldn't be disregarded by default.