No, it's literally EU law that manufacturers can't include chargers in the box.
However many times you keep saying that, it still won't become true.
Manufacturers have to offer the option of buying the product without a charger. How they organise that - how much less they charge for the no-charger version, whether they offer an optional free or discounted charger, whether they physically add it to the box or not, is up to them. Apple have
chosen to remove the charger and sell it separately at full price - and, at least in the UK, there's no evidence that they've reduced the price of the no-charger Mac by a single penny: the UK MBA (no charger) costs £1099, the US MBA (with charger) costs $1099 - "cross off the dollar and write a £" has been SOP for UK Mac prices for years.
So your defense to "no manufacturer would make 2 SKUs of every product" is to point out that Apple would have to make at least six different SKUs of one particular product? Fascinating.
No, the defence is that they
already offer
dozens of different permutations for each product due to colour, CPU, RAM size, keyboard layout and (in the US) power supply type for each product, so quite clearly offering those sorts of options isn't the end-of-argument obstacle you seem to think it is.
If I go to buy - say - a rechargeable power tool (not covered by the common charger directive) - it's common to get the choice of the "bare tool" versus a "starter kit" including batteries and a charger (usually at a better price than the separate parts). A Raspberry Pi? You can get just the computer or a starter kit with PSU and SD card (even for the consumer-oriented fully assembled Pi 400/500 version, we're not talking about bare boards for developers). In fact, it's pretty ubiquitous for computer parts to come in both minimal "white box" versions with just the device and "full" versions with all the trimmings, cables and accessories.
...but somehow if you're talking about a laptop and power supply, that sort of choice somehow becomes unthinkable "because multiple SKUs"? Nope.