Good points, but also keep in mind that if your employer is giving you a steady diet of interesting projects using technologies that are highly relevant, you don't have any need to go home and do personal projects at night.

When I advise clients on career topics like this, I usually weigh whether the day job provides the client with a marketable skill set. If not, that person needs to consider doing things outside of work to maintain marketability. If the day job provides challenges and the proper set of tech, no real need to invest much additional time to learning.