I think that Stallman is forgetting that the open source / free software community has an awful lot to thank companies like canonical for investing time and development resources into making Linux so much more accessible to people. Not wanting to start a debate about unity or other recent changes in the direction of Ubuntu. I have nothing but respect for Canonical and Mark Shuttleworth for driving Linux on the desktop forward and contributing to the rich Linux ecosystem we have today.
I would also like to mention that - if i recall correctly it is made clear to the user during the installation process about the Amazon feature and that it can easily be turned off. Its not like they are doing it by stealth or anything unlike the other example cited in the OP.
As a long time Linux user (as my primary OS) I worked my way through various distributions. learning much about the core OS from things like Gentoo. A few years ago I settled on Ubuntu as a distro that Looks nice , is usable and just works (TM) I dont feel the need to tweak these days!. I feel spoiled by what Linux is today - everything just works out of the box (which is more than i can say for this new Mac Mini on my desk).
I guess my point is that if every one in the community was as anal as Stallman I doubt we would be in such a great place as we are now - as far as Linux goes.