X's product chief is stepping down to 'take a breather' after a year of running the app '24/7'

Nikita Bier. Linnea Bullion for The Washington Post via Getty Images Nikita Bier, X's head of product, is stepping down. Bier said he'll continue working as an advisor for X. Running the app has been a "24/7" job, Bier said, and it's time for "a breather." Nikita Bier, X's head of product, is stepping down from the role after a year at the job. "Ladies and gentlemen, it's time to pass the torch and demote myself to my natural state: a poster," Bier wrote in an X post on Wednesday. "I'll be…