Here are a few options for a formal rewritten title, depending on your preferred focus:
Option 1 (Most direct and formal):
MP Angus MacDonald Faces Allegations of Misinformation in Puberty Blockers Debate
Option 2 (Focusing on the dispute):
Former Colleague Accuses MP Angus MacDonald of ‘Vile and Immoral’ Conduct Regarding Puberty Blockers
Option 3 (Concise and journalistic):
MP Angus MacDonald Criticized by Former Council Colleague Over Puberty Blocker Rhetoric
Recommendation:
Option 1 is the most standard formal style for news reporting, as it summarizes the situation objectively while acknowledging the intensity of the controversy.