I know the author a little and I know the publisher rather better; but what really flagged it up to me was
Knowing Conor’s politics I was wondering if or how he would manage to bring in the revolutionary overthrow of the system, and he does it through a combination of a young hero and his friends teaming up with older mentors (one the central character’s father, the other the ideological guide for the revolution). However he manages to keep the suspension of disbelief and (I would have thought) in a style attractive to the target readership. If you don’t want your teenagers exposed to insidious lefty propaganda, don’t let them read this book. On the other hand if you want them to be intellectually stimulated as well as entertained, you could do a heck of a lot worse.
See also Sherwood Smith‘s glowing review on the SF Site.
Well, you know, I haven’t read Thompson’s essay, but I suspect you may not be a fair witness to his article. Just a little googling reveals that his strongest argument is on the ‘ha’ structure rather than merely the ‘a’, so that is already twice as string as you reported. I’ll reserve judgement until the unlikely day that I actually read the Thompson article; though I warn you now that I actually have some experience in paleography myself (do you?), so I will be appropriately sympathetic.
I still have no idea what you mean about “swearing against the truth so foul a lie”.