[jpatokal]

This appears to be at least in part a reaction to the backlogs at service centers described in the original article:

With hundreds of thousands more Teslas hitting the road, all those service visits—along with repair work—have reportedly backed up the company's service centers. Now the company has reportedly put an end to those extended service plans and is hoping instead to highlight electric cars' inherent reliability—and hopefully reduce the wait times at those service centers.

[hef19898]

Not sure if that logic, we are not able to maintain our cars fast enough so we get rid of scheduled maintenance, flies.