I at least partially agree that we should not let the lack of non-free graphics drivers for some cards determine the route taken. However I think that the lack of free drivers for older systems still in good order should be taken into consideration.
I think the best solution to this problem is to simply point people to the Trisquel 6 release as being the last release which is going to support hardware without 3d acceleration.
However I'm not entirely sure that is a good idea either because the goal of the distribution is give users a free environment to work in. Prioritizing pretty over making it easier to switch is not in line with the goals of the distribution.
I do believe that there is still an argument though for a 3d accelerated version. This might be an example of something that should be presented as a fund raiser.
If a certain amount can be raised (say $5,000 USD) then work will go into supporting a 3d and non-3d desktop environment. If people really want this badly enough it will happen. If not you can point to it and say “not enough people are willing to invest in it to make it happen”.
