Isn't wireless charging a big step backwards with respect to power efficiency? With the millions of phones they sell and the fact that every one of them is charged daily, are the losses due to Apples new charging scheme insignificant?
The iPhone 12 has a 11 Wh battery. Assume it's fully charged daily, that's 11Wh * 365 ~ 4kwh per year. It's about 50 cents of electricity to charge the phone for a year. It's imperceptible given other household electricity items.
If people are concerned about electricity usage, they should give away LED lightbulbs.
In some places where heating is still done with natural gas you might even be more eco-friendly by having an inefficient charger.
And as far as heating is concerned, heat pumps are more efficient, and most electricity—when turned into resistive heat—is less efficient than burning the fuel directly.
So the only case where it would be a benefit is if your heat is fuel-based, but your power is renewable, and this condition lasts most of the year.
ETA: the total charging loss from ten million iPhones charging 0-100 percent via MagSafe every day for a year would be 21,505 teslas.
The last bit is also wrong, 6wh * 10M = 600 Teslas. You can also read as “600 Teslas can provide phone charging for ten million people for an entire year”, take it as you wish...
Your fridge can easily use 100kWh a month. You’ll save far more energy by closing the door a couple seconds early every time you open it. Phone charging is a drop in the bucket.