An electric element
is intense heat, not modified heat like a gas burner.
Plus, the directness of it. The difference between a stove element and a drip coffee machine's warming element, is that the machine's elment is not supposed to get over around 200F (often don't get that high.)
You may not have breakage immediately by not using the wire spacer, but it will happen eventually, and it will be spectacularly frightening.
Lawrence/Maytagbear