Riiiight, so if a little kid was all excited about Santa Claus on Christmas and asked you about Santa would you respond by telling that kid that Santa does not exist? Or would you support their delusion because your empathetic to the excitement a young kid has about Santa and not want to make them feel bad?
With a child? Yes, I would and have lied to children about Santa Claus.
The difference is that I did not help them to permanently mutilate their bodies, ruining their lives forever.
They grew up, they realized the truth, no harm done.
On one hand no harm, on the other hand, massive harm.
Not sure if you are getting any of this. I know it is high level thinking, Relatively speaking.