Edison did indeed invent the first practical incandescent electric light. The article claims that "English scientist Sir Humphry Davy invented arc lighting (using a carbon filament)." Arc lighting does not use a filament... it uses an arc of electricity, a plasma. Arc lighting consumed the carbon rods at a fairly rapid pace, requires high voltages to initiate and maintain the arc, and produces high quantities of damaging ultraviolet wavelengths.
Another error is the article's claim that Captain Cook was not a captain. All persons in command of a ship are called "Captain" regardless of rank. Captain Bligh, famous for the Mutiny on the Bounty was actually Lieutenant William Bligh... when he was not in command.
I would expect the real "first incandescent light" was probably invented by accident when somebody overheated a thin piece of wire. Refining things to the point that a filament can be hot enough to provide useful illumination and yet last long enough to be usable were big improvements that required additional non-obvious discoveries.