Resistive heating is real.Don't forget the dummies who put a lamp on the table, bend the cord 90 degrees and then push it tight to the wall.
Common misuses of power cords are:
1. Wrong gauge for use condition
2. Mechanical pinching either from bending or putting the dresser on the cord.
3. Overloading a cheap power strip. These are technically called RPTs (Relocatable Power Tap) they confuse breakers. Buy a good one. Think spend more than $25
4. Plugging a high motor use device such as a refrigerator or microwave or window A/C
5. Plugging other RPTs into other RPTs (Daisy chaining these devices doesn’t end well)