The scenes were establishing the tholians have a mind control tech highly effective on the andorians - and used on quite a few andorians in sensitive positions, immediately after Paths of disharmony (and this is only the morsel we got to know so far).
The situation could only be worse for the andorian free-will, a few years afterwards.
And, given that these scenes had no impact on the rest of the books, these scenes are almost certainly dictated from the editorial/etc above, for continuation of the meta-andorian plot-line.
How do you get that from this:
"It has been used successfully on Andorian test subjects." ... "To make those test subjects especially susceptible to suggestion."
In fact, later on in the same scene he even complains about the Andorian ruling council, which seems to me like it paints him as a rogue, and indicates that the ruling council is not under Tholian control.
Indeed, the possibility exists that everything the Therin
commander does in Fallen Gods
is rogue, including his alliance with Tholians. The Therin
is a long way from home and out of communication with Andor, just as the Titan
is out of communication with the much-closer Starbase 183. And everything we hear after the first few pages about what's going on on Andor is filtered through him. So we shouldn't jump to conclusions about what's going on with Andor until we see the next book.
Meanwhile, I've noticed two serious continuity errors in Fallen Gods
1. The Andorian capital is consistently referred to as Laibok, but Typhon Pact: Paths of Disharmony
established that the current Andorian capital city is Lor'Vela, with the former capital having been destroyed by the Borg in Destiny: Lost Souls
2. There are several references to the "Council of the Clans" as (seeming) Andor's ruling body, yet the novels Andor: Paradigm
by Heather Jarman and Typhon Pact: Paths of Disharmony
established very clearly that the Andorian legislature is called the Parliament Andoria, with the formal head of state being the Empty Throne and the head of government being the Presider.