I would bold it if I were them. It's a nicely written message, but it reads like a lot of other PR apologies and it's easy to skim over it, deep in its position in the 5th paragraph.
Sometimes you need to make actions speak louder than words. :)
I don't think that you should assume that they are sorry that they "misused your phone contacts". This, like a lot of companies' efforts, is emblematic of their efforts to find out what people's (ever-expanding) comfort zone is when it comes to giving up their privacy. They (Path) are not looking at this as a philosophical failure (which would be cause for the apology you put forth)...they simply see it as an A/B test result ('sorry about making you uncomfortable').
Sometimes you need to make actions speak louder than words. :)