I think the rule only applies to device of a specific size (but that size might be laptop). Either way, Apple offers USB C as an option. You can have proprietary features (like MagSafe for all other Apple devices), but you must offer USB C to sell in the EU.

Presumably because the computers can also charge via their USB-C ports.

They also charge via any of the USB-C ports.

I’ll venture a guess and assume it’s because they can also charge via USB C, or maybe the EU law only applies to phones and tablets.