Re: Great but ...
AutoCAD Fusion 360 has been on MacOS for years - last I looked, a year ago, Autodesk said that it ran blazing fast under Rosetta 2 on the M1 in their benchmarks.
Solidworks has never been on MacOS, but its engine is used in an iOS solid modeller, oddly.
Fusion is probably the better fit for many Mac users anyway- it is a blend of the parametric and the free-form paradigms, the latter having greater crossover with many a Mac user's workflow (i.e modelling a dragon before painting it in Photoshop, animating it in whatever, and compositing the results in something else).
Apple are still releasing Intel machines, a la their stated two year transition roadmap.
The real big CAD doesn't run on Windows anyway, but on servers. Any heavy simulation runs on render farms (typically Linux based) or on rented compute so the OS that the client application runs on is largely moot.
Anyway, Apple's Mac Pro in last decade has been focused on stupid fast IO (for video)- not something that CAD really requires. One wouldn't pick a Mac for CAD work unless other parts of one's workflow benefitted from the hardware choice. i.e, creating video from a solid modeller and then colour-grading it to match some other video source.