Possibly dipping a toe into PPC?

[barracuda156]

To your point, you'd have to go BSD or Paid MorphOS.

You may be surprised, but a lot of software is newer on macOS ppc than, for example, on OpenBSD (the OS itself it not, of course). There are notable exceptions which can make a difference, like Qt5/Qt6 being supported on *BSD but not on MacOS.
Yet, it will be factually wrong to say that macOS has out-of-date software in general.

No experience with MorphOS (and no interest to get it, given their policies), but a simple question would be: does a major compiler (gcc or clang) support it in its current version and does it have a working out-of-the-box package manager? If not, then it will be a huge pain, even if they give you a newer browser.

 

[Doq]

You may be surprised, but a lot of software is newer on macOS ppc than, for example, on OpenBSD (the OS itself it not, of course). There are notable exceptions which can make a difference, like Qt5/Qt6 being supported on *BSD but not on MacOS.
Yet, it will be factually wrong to say that macOS has out-of-date software in general.

I believe the key here is to discern between software that "is supported" and software that "runs". While there is more or newer software that can run on Mac OS X, the software in OpenBSD is supported. To that, there are some users that may value software support rather than it simply running.

 

[barracuda156]

I believe the key here is to discern between software that "is supported" and software that "runs". While there is more or newer software that can run on Mac OS X, the software in OpenBSD is supported. To that, there are some users that may value software support rather than it simply running.

If by “supported” you mean “tested by upstream”, then possibly, though OpenBSD is rarely tested by anyone outside of OpenBSD package managers. But that is no different from the way MacPorts supports third-party software.
Upstreams usually support Linux and hopefully recent macOS. Anything else tends to be out of scope of concern.

P. S. I cannot recall seeing any repo to run CI on OpenBSD or NetBSD. Not that I specifically searched for, but it normally just happens to be missing. As well as old macOS of course.