Even going as far as calling her husband an asshole (might be true, I’m not married to the dude).
You misunderstood the text, the sentence is :
If only I got a penny for every time someone said: you don’t look like a computer scientist, I could be Mackenzie Scott without having to marry an asshole.
She’s calling Jeff Bezos an asshole, not her own husband.
You should look up Fishman Fluence pickups, they’ve been all the rage in metal circles for a few years and they are in fact made by stacking PCB-like layers rather than in the traditional way.