Gove defending him now.
They are all collectively losing their minds and any sense of what is required politically here including possible successors to Johnson.
At a loss to even begin to explain it?
It is explained by the fact that Cummings is both the creator of the ideology and the day to day person in charge of the running of this government.
They are aware of the huge ideological and practical void it would leave if he moves on.
Leaving the least suitable and equipped (And laziest) PM in history absolutely floundering.
It's quite simple when you consider it in that context.