boosterism

Boosterism is enthusiastic promotion of a place, organization, or cause—often with more zeal than objectivity.

The term originally described civic cheerleading for American towns and cities, where local boosters talked up growth and opportunity to attract settlers and investment.

The word now applies to any aggressive advocacy that downplays problems: The mayor's boosterism ignored the city's crumbling infrastructure.

It carries a faintly critical tone, suggesting promotion that shades into propaganda.