If I'm reading the article right, they are saying that macOS is giving the scare warning on it - this implies that DOSBox is an x86_64 binary and not ARM native.

If true, that implies development is on life support at best, since any actively-developed project targeting Mac OS would likely have shipped an ARM version within 6 years of the ARM transition.

So anyone who wants to ever run Mac OS 27 or buy a Mac after next year will probably have to find an alternative (or port DOSBox mainline to ARM themselves!)