I charge my Switch with various USB PD chargers (mostly Anker but also Apple, Google and others) and haven't had a problem so far.
I was trying to find some information about what would cause PD-compliant chargers to fry the Switch. It appears that while the switch is PD-compliant itself, they used a slightly non-standard connector that reduces tolerances and could, in some situations (most likely worn cables) cause some pins to electrically bridge and fry the port.
To be honest, this doesn't seem like an issue with USB C, just Nintendo intentionally implementing it wrong. They should have either used a proprietary port for the docking mechanism rather than modifying USB C in an unsafe way then saying only to use their proprietary charger.
I was trying to find some information about what would cause PD-compliant chargers to fry the Switch. It appears that while the switch is PD-compliant itself, they used a slightly non-standard connector that reduces tolerances and could, in some situations (most likely worn cables) cause some pins to electrically bridge and fry the port.
To be honest, this doesn't seem like an issue with USB C, just Nintendo intentionally implementing it wrong. They should have either used a proprietary port for the docking mechanism rather than modifying USB C in an unsafe way then saying only to use their proprietary charger.