Which word best describes W.B. Yeats's attitude toward his imitators in this poem?

To a Poet, Who Would Have Me Praise Certain Bad Poets, Imitators of His and Mine

You say, as I have often given tongue
In praise of what another’s said or sung,
’Twere politic to do the like by these;
But have you known a dog to praise his fleas?

condescending
contemptuous
hateful
vengeful