I was looking at this too, and it really needs a faq. As far as i can tell via RAW it is a yes, b.c it isnt actually using the Ynnari Archon to use the stratagem and it isnt targeting him, its a Yes or No, do you have it or not. B.c it is targeting and using on a Succubus and Haemonculus as well and you have DE stratagems unlocked via DE detachment.
I'd say yes, and i have played it as a yes once already as well.
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