Arguably, more people do “actual engineering” on macOS and windows.
(the comment you replied to was clearly arguing quality rather than quantity, so that's what I'm asking too)
Anything CAD related, because there’s next to no professionally used CAD software on Linux.
Audio stuff. How many DAWs have a significant Linux user base?
And even beyond that, how many website devs are on Linux? Most people making product pages aren’t on Linux because not a lot of the designers work on Linux and it’s better to have a mono culture of devices for office management.
And your question is what one would rather do on macOS/Windows rather than Linux which again is subjective even if I scope it to stuff you can do on both Linux and macOS and windows.
Flip that around, why would someone use Linux to develop when they could use macOS? Can you give a non-subjective answer? Then try the opposite.
Even if you’re developing for Linux deployments, you can still do most of it local and then spin up docker in the VM on demand.
The number of software developers who need to run a Linux VM on their Mac/Windows are a vast minority.
On the other hand electronics CAD had been run mainly on Solaris decades ago, but for the last 20 years Linux has been the most likely host, including for the most expensive commercial professional solutions.
I have never heard of anyone using macOS for any kind of electronics design.