No. The magnet matters very much. In fact it is inseparable from the patent. That's the novelty of the patent. That's why no other PC manufacturers or electronic devices for that matter use magnets on the power port.
If your deep fryer uses magnets on its power port it actually could be an infringement of Apple's patent, as your deep fryer likely has enough electronic components to be classified as an electronic device.
We'll just have to agree to disagree then. Ultimately court will decide on this matter if Apple wants to make a play. They can come after millions of deep fryers too. But they know better.
I'll see your MagSafe patent
7311526 Filed September 2005, granted in December 2007 and raise you patent
6478614 granted to De'Longhi, November
2002:
...comprises an electrical cable exhibiting a connection plug to the electric network at one end, and a magnetised member electrically associable--through a magnetic force--to an outlet connected to the kitchen appliance at the opposed end...
Again, it's not just about magnetic power cables. If it is, here is your prior art.