Otherwise it's time we let macOS go because Apple plans for it to run iOS apps and to use their iOS processors in their computers, so we and our tools and software are approaching obsolete and when iOS devices can compile apps we will start being redundant too.
Even if they released new hardware for us tomorrow it would be coupled with iOS processors and how many generations of having both processors can we really expect?
Until server ARM processors are compatible with iOS processors we are eventually going to lose parity with all the server software that made MacBooks good developer platforms too.