I'm a PD evangelist. Imagine a safer power delivery system that can go directly to the device you want powered. Scale that with fact most of the world could be and should be DC with AC being good just for niche applications like microwaves and mid range transmissions.
Chargers are almost always compatible with any a/c voltage and only need a physical adapter to plug into a wall socket in a different country. Or bring a power bank with you
They're also much less capable though. Have fun finding a USB-C PD port anywhere when you need to charge your laptop - a power outlet is much more useful.
I basically end up using power bricks for laptop and phone, and ports built into a power strip for everything else. Most stuff doesn't need full PD support (but most anker power strips actually support it, just not at very high wattage).
I don't think you can do the PD standard from a USB a port. Edit: Reading the Wikipedia page, it sounds like usb-a supports PD 1.0 but not 2.0+ and the higher power requirements.