The issue is finding a charger that will support the "correct" cable and your device.
I just bought a new Thinkpad T15 with USB C and I was quite annoyed to find that it will only charge from a 20V USB PD charger - NOT the usual 5V, 9V or 12V USB PD chargers. That means I need to be careful when buying a charger, say if I'm abroad and lose my luggage. The 20V chargers look nearly the same as the others, they're just labled with "30W" or "60W".
When USB C for laptops started becoming more common, I was expecting to be able to at least slowly charge over night from a standard phone power supply (USB A connector at 5V/1A+) - 50Wh at 5W would give you a decent chunk of charge over night if you're otherwise SOL. If they'd at least added support for 9V and 12V PD charging that would have been great - most smartphone chargers being sold right now with a USB C jack support this, so you could have said, "if the charger has a USB C port instead of USB A, you can charge laptops with it!".
Instead it seems they've opted to omit the boost converter and other additional circuitry that would have been necessary - more profit for the manufacturer, more annoyance for the customer.