Pragmatic means practical and realistic, fitting the context of effective government reform.
Unorthodox (unconventional) campaigns being more efficacious (effective) creates logical contrast.
Vulnerabilities exposed by crisis logically lead to comprehensive reforms.
Obstinate refusal paired with callous (indifferent) attitude logically explains disregard for grievances.
The contrast between idealistic and pessimistic represents two extremes, with 'balanced' as middle ground.
Rigorous methodology paired with incontrovertible (undeniable) conclusions establishes authority.
Equivocal (unclear/contradictory) account with protestation (assertion of innocence) creates appropriate contrast.
Assiduous (diligent) efforts contrasted with abstruse (difficult to understand) subject matter.
Vituperative means abusive or harshly critical. It fits with damaging comments about competitors.
Recondite means obscure and requiring specialized knowledge. It matches with complex sentences and limited appeal.