You can argue whether it is manipulative, but you can not deny "the intent" here. You you read up technique and then apply it, the conscious intent is 100% there. You made an active choice and went out of your way to enact it.
I can deny the intent to be exploitative and coercive.
Really I don't see how. I would like an example, i have learned sales techniques and to me even sales techniques, who are multiple order of magnitude more manipulative imho, aren't really coercive . Also, sales techniques works way better on persons not aware of them, non-violent communication mostly work if both persons use it (that makes it way less actionable than it's proponents affirm), which is to me the opposite of exploitative.