In "Harrison Bergeron" by Kurt Vonnegut Jr., why did Harrison say that he is emperor?

I think we need to see
this claim to be "emperor" as reflecting Harrison's own belief in himself and his
abilities, but also the result of his pent up frustration of never having received praise and
recognition for the wonderful genius that he was. It is certainly a rather exaggerated claim,
yet for someone who has been forcibly handicapped throughout his entire life, perhaps the relief
of casting aside his handicaps and being allowed to shine gives him such a boost that he is able
to make such an outrageous claim.