I absolutely encourage people to choose the license that works best for them. My motion has been the other way, all my new stuff is permissively licensed. This is basically because I want my work to have broad impact, and have the possibility of collaborating with as many others as possible, including those making proprietary software.
I'm a fan of Drew's work, and also hope to help GPL projects such as Inkscape (I met many such developers at Libre Graphics Meeting). Choose the license that works best for you, and if you can articulate the reasons for your choice, as Drew has done here, even better.
It really depends what your goal is if you choose a copyleft license or not. As far as I know even the FSF acknowledges that for pursuing some goals (e.g. driving adoption of open standards) a more liberal license is an appropriate choice.
I'm a fan of Drew's work, and also hope to help GPL projects such as Inkscape (I met many such developers at Libre Graphics Meeting). Choose the license that works best for you, and if you can articulate the reasons for your choice, as Drew has done here, even better.