Guy Bullshitting Me about these Exercises being Bad?

wow, this guy’s really concerned about hurting his shoulders/biceps

http://www.T-Nation.com/free_online_forum/sports_body_training_performance_bodybuilding/safe_bicep_exericses

http://www.T-Nation.com/free_online_forum/sports_body_training_performance_bodybuilding/anyone_do_shoulder_exercises_for_injury_prevention

http://www.T-Nation.com/free_online_forum/sports_body_training_performance_bodybuilding/slaplabrum_tear_would_i_know_if_i_had_one_