I think like most, journalists aren't used to dealing with wholesale prices. "oh that's in MWh "wholesale", so we just divide by 1000 and oh look it's 21p". Very few people will really deal with this end of the marketThat's because that's how it was reported this morning... it's only now that people re-write their articles that it becomes clear that costs are added to the 21p. The good news it's starting at 21p, not 52p or 72p.
As you say, hopefully providers will trim their prices. I seem to recall that for me 66p is dangerously close to the price of diesel.