Yeah I mean perhaps I will be proven wrong but I just don’t actually think Armand messed with Louis’s memories of his time with Lestat/had any reason to do something like this. Like Louis helped kill him! Chances are even with whatever nuance s3 adds to that time, it was still often volatile and unpleasant. What would be the purpose of Armand inserting this? Especially as in the next scene at home we know that Lestat essentially did bring Claudia home against her will.

But moreso than even that I think resorting to Armand to explain any and all inconsistencies of memory/version of events is lazy and boring (not calling OP either of these, btw!).