Yes I think you are documenting how Gosling & Taylor are ultimately not with Epicurus themselves, but insist on following the party line. I think you are exactly right as to where it would lead.
My main thought I guess is that G&T had enough intellectual honesty / perception to publish what ought to be obvious to most anyone - that the mainstream view of Epicurus is nonsense. But they don't have enough "courage" (or something, I don't want to paint with too broad a brush) to adopt Epicurus' views themselves. The pull of the consensus Academy / Reason / Humanist position (and who knows what else) is too strong for them to break free entirely. Quite possibly they realized that even writing what they did would set them back in their profession -- I see this book cited or mentioned VERY infrequently, even though it seems to be head and shoulders the most thorough and best-researched on the topic.