"You praise her now ONLY because it is too late," Morrissey wrote of the Irish singer, whose death was announced on Wednesday.
Morrissey previously accused his former Smiths bandmate of "using my name as click-bait".
Benedict Cumberbatch voiced a character named Quilloughby in the latest episode of the animated sitcom.
The musician sparked outrage for promoting the anti-Islam For Britain party.
All ticket-holders will receive refunds next week.
Does enjoying the man’s music mean you’re obliged to apologise for his words?