Between hostile defaults, dark patterns in opting-out and unsubscribing, and persistent surveillance, a lot of consumer-facing tech these days is taking on what an obsessive abusive partner would do. I can't help but wonder if these systems are a reflection of who those designers are as people.
The psychopathy is not due to the developers nor the designers, but rather, the perverse incentives that bring profits to shareholders. You're looking too close at the end-result. It's the fact that it's legal to profit from these kind of behavior that is the real cause of all of this. But consumer protection online is all but absent, and the "strongest" effort so far, GDPR, was implemented so annoyingly and in your face that most folks' experience with it is a net negative, so future motions will be shot down more easily with wide praise.
No. Many bad things are legal that most people don't do. People taking the actions and profiting from them deserve the blame. That includes developers and designers, plus plenty more people.