I haven't used any of the latest generation, but are they still using that custom PMIC that gets fried by the most basic of mistakes but that they completely re

I haven't used any of the latest generation, but are they still using that custom PMIC that gets fried by the most basic of mistakes but that they completely refuse to sell you for repair? I remember trying to fix some Pis that died for unknown reasons and seeing nothing but anti-repair nonsense from the staff on the official forums. No schematics to be found and even the people who go through the trouble of diagnosing an issue and try to buy a replacement component (because it's custom for some reason) get the standard response: "the Pi is only sold as a unit and is not intended to be user-serviceable". It's sad that even the cheapest knockoffs from china (like Orange Pi) are more open than the RPi (you can get schematics and all the components are available from the usual places) - I really hope that's improved in the last few years...