Yes, he is mindlessly mimicking his father's voice. I feel compassion for your son only because I have been affected by this. His "inner critic" becomes a lecturing "outer critic" when influenced by the voice internalized that alights this critic in the first place. He has been programed. Doesn't matter that he's 30. It will be a lifelong process to undo. The accents we pick up as a child, we don't lose them those speech patterns. They die hard.
Mimicry notwithstanding, the baby shower that made your friend leave is telling that it may be more than mere mimicry. It may be real borderline or narcissistic traits of some kind that only those outside the family can perceive? I know only too well how challenging it is to try to see a family member objectively. Not possible for me. Not in me.
It is a hard place to be. If you stay, you have some ability to influence the next generation. But will it be enough to help you not feel sick.
If you get too sick, how much help can you feel you can be?
Keeps coming back to the answer must be someplace inside you, where you just know you can't take anymore crap like this, from anyone.You've said it, and I agree 100% with that concept.
We have to self-protect, especially now, and especially because nobody taught us. It is a vast victory that we can recover the protective instincts at all, so bravo, I say!!
Self-preservation systems are turning back on in a healthy way, but also in hyper-vigilant ways, (at least in my case) so it's hard to use the left brain to observe the right brain's emotional drasticizing at perceived slights. Truth be told, I have been in flashback in these kinds of situations. I perceive a tone that others do not.
I have a hard time listening to others' perceptions when I KNOW DAMN WELL I'm being attacked! I heard the tone of voice. Besides, I was gaslighted my whole life, so it has taken a lot of "thought-stopping" and correcting to work out that trusted others might not be gaslighting me now when they see me go into PTSD land.
I have evidence they are NOT doing it, but I'm not used to seeing any reality checks as anything else. That's how I see my problem with this. It's hard to see clearly how much is a healthy reclaiming of skills and boundaries and how much is hyper-vigilance or an overactive threat detection system of PTSD and learned "people are dangerous" beliefs? God, they SO were and in fact I was trivializing other's gaslighting when it was abusive. Now, I'm exaggerating the perceived threat of anyone who doesn't see how their tone was abandoning to me. This is the double-bind of PTSD and why relationships become so overwhelmingly complex inside.
When it comes down to how badly this behavior (the contempt you hear) is perceived by not only you but your friends as well, then the choice is unfortunately pretty simple. Most likely in that scenario, you're trivializing his hurtful behavior, and only seeing it when he's with his father when it's more recognizable to you? (See if that sounds right to you. I am not sure I'm getting the picture. Even if I were, I'm too non-objective as I am at zero-tolerance levels with narcissists at the moment, such that I view those who can stand their presence as "flying monkeys" or spies. I'm still too hurting.)
I'm so sorry. I can't imagine the pain this must be causing you. :( Only a wonderful person would feel it. You didn't deserve that man or any of this. This is not a good position to be in, and no, it is not your creation. It's wheels are bigger than you. You're just caught up in it.
Whatever you do, I think you will be doing the right thing.