Gove was voted out rather than knifed, because he's an untrustworthy, loathsome former-lickspittle of the current shambles.Farage feels his work here is done
Boris was knifed
Gove was knifed for knifing Boris
Leadsom only ran cause Boris (who she would have supported) was knifed
As for the others, there was nothing actually stopping Boris from running, nor Leadsom from seeing out the campaign. And as for Farage - his work hasn't been done at all, has it?