Thank you so much for the reply!
I thought we might be able to consume a lot less fuel by arriving at the destination faster but I realize that it's not quite like that in reality.
Another issue was that I was merely thinking about the induced drag, ignoring other source of drag. I thought the penalty we get by increasing speed might be still be worthwhile as the induced drag coefficient is proportional to lift coefficient squared(my initial guess was that lowering AOA might compensate for there being higher speed)
Thank you so much for clearing up my confusion!
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