You're arguing that it doesn't mirror a real life manipulation tactic by listing all the reasons it's not literally that tactic. I don't think that's a good argument. This scene has an older man planning to kill himself, his younger ex trying to talk him out of it, and this moment being followed up by a sweet moment with romantic undertones. Someone has compared it to an abusive partner threatening suicide as a manipulation tactic
Firstly, I asked because I genuinely didn't understand the term 'mirroring' in this context, so I asked a question, didn't get an answer so I tried to break down the actual events of the episode from the perspective of somebody who both doesn't care for the Bangel relationship but also doesn't loathe Angel and call him a manipulative/toxic/groomer/rapist or whatever.
Secondly the interpretation you state seems so vague and out-of-context as to be kind of unfair. At base we should take the characters at being sincere unless something about their character indicates otherwise.
For example; Buffy cries in anguish as she attempts to get Angel do to what she wants, in another context couldn't that could be seen as manipulative and toxic? She is trying to influence him with her tears, wow, that could be seen as problematic.
See, if I take them both as sincere then the scene is fine but we can say 'well, in another context this mirrors coercive behavior'. Okay, but context is key in most situations and this is no different so I don't think its a very good argument, sorry.
Does she really do that with Buffy?
What can I tell you, they're a
Sailor Moon enjoyer, the anime that has a relationship between a
14 yrs old girl and an 18 yr old guy, I ain't gonna take morality lessons on fictional relationships from them.
And yes, they excuse Buffy's behavior in S6 even though, by their own 'strip out the metaphor' reading, she does 'the bad thing' (I'm not trying to spoil anything for others on the thread) and should be condemned by that standard.