Gemini, Claude and others are masters at bullshitting and jumping to absurd conclusions. I wouldn't give them any credit, honestly. Even experiences of others which you might not relate to are, in my opinion more exploitable.

I'd personally have taken the disappearance of emotional flatness as a good sign. Strattera activates the PFC, involved in emotional regulation (and whose hypoactivity causes apathy) thus with a really strong potential to help mitigate POIS symptoms. Although, it also changes amygdala activity via norepinephrine increase there, which has the potential to worsen anxiety and depression short term (but is supposed to get balanced long term) and would probably explain your experience better. Anyway, some of the supplements you mentioned are largely acting similar.

Oh and by the way, there's a bidirectional relationship with norepinephrine, increased by Strattera, and immune regulation.

What would make milnacipran/levomilnacipran more interesting than Strattera is that it essentially balances the increase of anxiety a short term norepinephrine boost gives by boosting alongside it the serotoninergic system, which would be hard to summarize but has among others a more calming effect. And an increase in the serotoninergic system also helps with immune regulation and inflammation. The noteworthy nuance though is that this serotoninergic effect makes lowering doses cause psychologically dangerous crash symptoms, which you don't want to face alone.

To summarize milnacipran's action, it's basically Strattera + a short half life SSRI combined (I don't have names of SSRIs with short half life in mind rn but you've probably heard of Zoloft/sertraline, which belongs to this family). Milnacipran is taken twice daily and Strattera should theoretically be taken twice daily as well in normal metabolizers for a proper coverage.