IANS - In a sharp criticism of Meta CEO Mark Zuckerberg, a key long-term investor in the company has said that the social network needs to reduce more headcounts and stop spending too much on metaverse to get its "mojo back". In an open letter on Medium addressing Zuckerberg, Altimeter Capital Chair and CEO Brad Gerstner said that Meta needs to rebuild confidence with investors, employees, and the tech community to attract, inspire and retain the best people in the world.