Let me clarify:
1. I am not telling you to 'ruin' your computer. I'm telling you that you
won't get help installing proprietary drivers here, since we only support
software freedom.
2. No, not all cards require proprietary drivers. Intel graphics are
supported by Intel themselves, and quite a lot of nVidia's graphics chipsets
are supported by nouveau. ATI/AMD can, at the best, get 2D acceleration with
free software. 3D requires proprietary, non-free firmware being sent to the
device by the driver in most cases on AMD chipsets. We don't support that
either. Basically, what makes nVidia/Intel 'not proprietary' is that they
work with fully free software, unlike ATI. And, to clear things up, I wasn't
recommending buying nVidia, but I don't see how getting an nVidia card is
'not a solution'.
3. I can't confirm whether those drivers you linked are free software or not.
If it is, it only supports 2D acceleration, which you can get out of AMD
cards already just fine with the free software drivers.
4. RMS is probably referring to 'pirated' software. That has nothing to do
with free software. Proprietary, 'pirated' software is still just as bad as
all other proprietary software.
5. I don't even get what you're asking here. What cost will I take for
freedom? I'd rather pay for a device that can be used in a fully free
environment, so that I may modify the source code to the driver for the
device to make sure it's not doing all sorts of nasty things behind my back,
like sending off all my data of what I do regarding the driver to a company.
With proprietary software, it's hard to figure out if it does that or not.
I'm just reminding you to not ask for help with installing proprietary
software on these forums. It might be your computer, and you are more than
free to do absolutely whatever you want with it, but asking how to install
proprietary software, then calling me an 'nVidia fanboy' when told that AMD
doesn't support software freedom for their GPUs is not going to make me help
you set up proprietary drivers on your computer.
There are other solutions, and one of them might be to not use Trisquel, if
that's really what you wish to do. I'm not going to recommend any distros
that would probably work with the AMD proprietary driver if you so decide
that you absolutely need it, however, they are easy enough to find.