I would like to offer an opposing view, and as my work has been used to make your case, I feel I have some say in the matter...
According to Webster's Online:
Origin of POINTILLISM
French pointillisme, from pointiller to stipple,
What I do (in ink) is stipple, apply dots, whether in color or in black ink. That is the verb. What I do is stippling. By definition my color work IS pointillism, but black and white cannot be.
So, imho, stippling can be used to describe b&w OR color works done with dots (or even small strokes). Pointillism can ONLY describe color works done by stippling.
Is that right or did I miss the point?