Way to go Kris. I agree with him: if ghosting will cost the employer more and that employer has disrespected you, go for the ghosting. It is indeed easily as much a statement and as satisfying as any other method of quitting. So many employers treat their employees like shit that I feel this is what they should expect in probably 90% or more of cases. Employers' complaints will fall on deaf ears when they have been abusing employees for literally the entire existence of this relationship throughout history. Even jobs that pay well and have great perks (tech for example) often treat their employees like shit and then they complain that they can't hire enough or retain their employees. I generally prefer to always send a note and make things clear, but if I could hurt the employer who hurt me more by ghosting, I would definitely do that.
Employers should learn how to respect their employees if they don't want this and other things to happen to them. Otherwise, they deserve this and worse. They could have paid the couple thousand Kris requested and was promised in raises instead of losing $20k but they were assholes. They got what they deserved those fucking pieces of shit.