This is for faster speeds supported by newer/future phones. The SE 2021 (and iPhones in general) aren't that fast when compared to some alternatives that charge much larger batteries in 10-30 minutes. My phone (not Apple) goes up to 60W, for example.
The speculation is that Apple will only allow their chargers or chargers they approve (and get paid for it) to charge future iPhones faster. This is the EU telling them not to do it. USB-PD is a standard (already used by Apple on laptops) and can do up to 240W. No need for proprietary chargers.
The speculation is that Apple will only allow their chargers or chargers they approve (and get paid for it) to charge future iPhones faster. This is the EU telling them not to do it. USB-PD is a standard (already used by Apple on laptops) and can do up to 240W. No need for proprietary chargers.
Why would Apple do this? Money.