Said ThinkPad Tablet models are based on Wacom's technology, so we can have
some confidence that most Wacom's digitizer pens and tablets work fine with
Gnu/Linux without non-free firmware. I tested them using blobless Debian
(without any non-free firmware). Microsoft's Surface Pro is also based on
Wacom's technology, but it's hostile to free/libre software. Congratulations
that you've chosen something right. Even the entry level Bamboo series are
good enough for most artists.
As for Apple, it's a cult, not a religion. This is because that cult leaders
make money by taking advantage of their followers' ignorance.
Some more trivial: I heard that Khara (an animation firm) planned to switch
to free/libre software like Blender. If some animation studios could switch
to free/libre software including Krita, Gimp, Inkscape, Blender, etc., it
would be a major step forward. And you can help.
