USB-PD is in a twilight zone where it can deliver enough power to cause safety risks but, due to its low voltage, is not subject to the level of regulatory scrutiny that other electrical products receive.
To date, the USB-IF's approach to safety and interoperability does not adequately protect consumers. USB-PD devices should not be incompatible to the point of damage but USB-IF has been unable to ensure this by keeping non-compliant products off the market.
USB-PD needs to be pulled under the IEC, NRTL (US) and CE (EU) regulatory systems and compliance overseen by entities with the legal authority to deter legitimate manufacturers/importers from selling non-compliant products.
"You can plug it in, but it might catch fire" just isn't good enough for a power delivery system that can provide 100W.