Your use of the term doesn't "bother", "offend", or even "please" me; I just didn't understand the mindset of the authors, i.e., the only term that sprang to mind was "ambiguous" -- thus the post.
Don't have a lot of time these days to post (hope this will change soon...I enjoy it quite a bit...) -- this set of posts touches upon some things I'm incredibly interested in, namely philosophy and sociology, so that's why I posted.
I leave you a couple of my favorite altruism quotes (and one or two I learned in making this post):
Every major horror of history was committed in the name of an altruistic motive. Ayn Rand
A large part of altruism, even when it is perfectly honest, is grounded upon the fact that it is uncomfortable to have unhappy people about one. H L Mencken
I would rather be kept alive in the efficient if cold altruism of a large hospital than expire in a gush of warm sympathy in a small one. Aneurin Bevan
A race of altruists is necessarily a race of slaves. A race of free men is necessarily a race of egoists. Max Stirner
Altruism is selfishness out with a pair of field glasses and imagination. Christina Stead
Much as we might wish to believe otherwise, universal love and the welfare of the species as a whole are concepts which simply do not make evolutionary sense. Richard Dawkins