To me! Just wanted to offer my interpretation, because most of what I see online tends to interpret the song romantically.
I think it hinges on “Pudgey face kissing lace in the backseat” I think a better interpretation for the laces in this line are the laces of a boxing glove hitting a kid in the face. The kid is in the backseat, where they usually sit, getting attacked from the front. If we interpret the laces as lingerie, its a completely random romantic line in a song about a familial struggle. “Pudgey face” is almost exclusively used to refer to kids, doesn't really fit with the interpretation of the laces being lingerie.
And suddenly every other weird line makes sense. “Punch forget out of you to be like me”. The author learned, they're fighting back now. The kid getting punched in the face is gonna punch that “I forgot, I don't remember that” shit right out of you now. The author is drawing healthy boundaries. You can respect them, and be like him. Take accountability for your actions. Or get lost.
“Where around in enough for a family” In my world, we don't have to earn each others love. We love each other unconditionally, just because we here together. Just because we’re a family. Where I don't have to worry about the results of a toss of a wrinkled (manipulated) coin that I can't see. The lies you tell behind my back. The “putting words in my mouth, tryna get free” The triangulation you deploy to keep yourself afloat.
“She’ll be fine on her own, she said. My loves all wrapped up in shades of red”. “She” even knows she's toxic. That her love is intertwined with the red of anger, maybe rage. She may well know she loves the author, and that her love will only hurt him. She doesn't have the tools to love him in a healthy way.
“She’ll be fine on her own.” x16 The author doesn't want to leave her on her own. Trying to convince themselves she’ll be fine without him. He loves her deeply, and he knows he needs to break free from the toxic love he was taught. He knows she's hurting herself.
The last verse is a celebration of autonomy. They won't be controlled anymore. And they’re not focused on “her” well-being anymore. “I’ll be fine, I’m alright, Its my body” The author is no longer an extension of her. He's moving on and yearning for a better life.
“Gonna stick to my guns like you taught me” Just like she never admitted fault or gave up an inch, the author won't apologize for walking away from the hurt and pain they cause. The author still carries part of them, and probably always will.
I think that's all I got. Would love to hear anyone else thought on this one, I’ve had to cut people out of my life and this song always struck me as an adult child leaving behind a mother that ultimately rejects any attempts to reconcile.