Its simple. Hamas being an islamist group is favored by a substantial political force in the UK. In many former mill towns in Lancashire and Yorkshire and the Midlands Labour politicians rely on the Muslim voting block. Although the recent introduction of identity checks at elections was introduced to reduce the block voting by "clans" this is still a potent force. While I'm afraid "incels" have no political clout. They effectively play the role of fictional bogey man for feminists to tilt at as "proof" of toxic masculinity.