nonconstructive

/ˌnɑnkənˈstrʌktɪv/
adjective
  1. Not helpful or productive; tending to cause problems or arguments rather than solve them.
    • The debate became nonconstructive when people started insulting each other instead of discussing ideas.
    • Instead of offering solutions, she gave nonconstructive criticism that hurt everyone's feelings.
    • His nonconstructive comments during the meeting only made the team more frustrated.