Yes I think Don's explanation is the right one. Even today Epicureanism is not reputable among the academics. A few of them may argue differently (the O'Keefe's etc, who argue the "tranquility" position) but the majority of Academia knows better.
The majority of Academia rightly sees Epicureanism as an individualistic rejection of Platonist uniformity, and they aren't going to finance and support and promote tenure for people to focus on the deeper aspects of what Epicurus taught.
It would be interesting to try to learn more about Macgilivray personally to see what he really thinks himself, but I bet Don's right - if you want a career in Academia you're going to toe the line and not spend too much time on Epicurus.
And if you choose to go down the "tranquility" road then you'll eventually end up in Stoicism, because they have the market on anesthesia and emotional suppression cornered.
