I don't quite buy your argument - yes these professions may work long days, but generally the upkeep of skills falls into those allotted working hours. Programmers should do this too, when it is helpful to their work. But suggesting that someone should add a whole new project to their resume on the weekend is akin to saying a lawyer should take on a pro-bono case just to buff their CV. If they want to do that, more power to them, but it shouldn't be expected of everyone.

As to academia... don't get me started. That is a strange and unusual profession which lies somewhere between 'hobby as job' and 'slave until you're tenured'.