Before that Lore called the thing and told it
I will be using the identity of Data. If someone called Data talks to you that will be me. They have defenses that will stop you from eaing them I will come up with a way to get around them. When I do I will call you with a indication of it.
Then we get the complicated plan to show off in that we drop shields to beam out a target then destroy it to show great power to impresse the thing at which point it would have eat everyone.
Lore and Data appear to at least have some biological components
TNG Season 1, Ep# 14: "Datalore"
LORE: Lesson one in becoming more human, my brother. You must observe all human customs.
DATA: Champagne?
LORE: An ancient ritual, still practiced when they celebrate events of importance. My brother, I toast our discovery of each other. May it fill our lives with new meaning.
DATA: I have some doubts about the value of human ... customs in this ... my ... brother ... (he begins to slump)
LORE: And let us toast also ...
DATA: Brother ... help me ...
(Data collapses from the effect of the drug in his champagne glass).
Darth Wong's trek database wrote:Computers and Androids: Data can be drugged. This is actually the second incident in which exposure to a particular chemical caused debilitating effects on him (the first being "The Naked Now")
If Data can be drugged they both have enough living matter on board For the entity to ba able tell that Lore was built by Humans.
Two strikes against you.
1: It could comunicate with Lore and he could call it on command.
2: It has been shown to be able to conspire with Lore in order to eat Humans.
So we have shown it already knows what we are and that we are quite capable of talking with if it wanted us to.
Sounds to me like the thing was just stalling for time to come up with a way to get the Enterprise to drop its guard.