How many times have they done that?
iDevice 30-pin, iDevice Lightning, MagSafe 1, MagSafe 2. To make matters worse, MagSafe stuff is patent restricted, so there's not much competition for chargers...
Complain that it’s not what everybody else is using, do not complain that it’s frequently changing. Because it isn’t. That’s just empirically untrue and a very weird statement to make. It’s non-sensical.
You can also hardly complain about the original Magsafe since that one is actually different from other power cables for a reason. These complaints are just so fucking weird and disconnected from all reality to me. Like you don‘t really understand the world or something.
As for MagSafe, it's only a partial success. All of my MacBooks have outlasted their original MagSafe power supplies. They aren't robust, can't be easily repaired, and are expensive to replace. I'm happy they're easy to use and help to prevent damage to the laptop, but Apple should have fixed the other problems by now.
I only discovered the issue when I felt a mild tingling sensation on my leg. Apple has let this issue slide for some time; there's over 2,000 1 star reviews on the Apple Store site [1]. This stands in stark contrast to the superb build quality of the MacBook Pro itself.
[1] http://store.apple.com/us/product/MC461LL/A/apple-60w-magsaf...
* the original iPod which used a Firewire port
* the original iPod shuffle which you plugged in like a USB flash drive
* 2nd gen iPod Shuffle which used a special 3.5 mm minijack docking station for charging
* 3rd-4th gen iPod Shuffle which used a 3.5 mm minijack to USB cable
Update: If you do include MagSafe, you might as well include the 3/32" sub-mini and Barrel plug variations for the really old Powerbooks and iBooks http://support.apple.com/kb/TA32393