I think Apple are a different company now. In 2006 (when the Get A Mac ads first aired), pre-iPhone, Apple were still the relative underdog: their market capitalisation was ~⅓ of Microsoft’s. Pitching themselves as the plucky, modern alternative to the PC was easy to do.
Now, even though Mac marketshare still isn’t massive, the optics would be different. Apple are one of, if not the most valuable company in the world. Comparing and bashing rival products would now look like punching down. Apple is, and Apple products are, far more ubiquitous than in 2006-09.
Instead, I think they’ll just focus on the speed and efficiency gains of Arm Macs and let them stand on their own merit.