Many things are the truth, so it's really a question of framing. Another truth: humans have done reversible and irreversible damage to their natural environment; they can collectively reverse some of the damage and prevent further reversible and irreversible damage.

To focus on only irreversible damage -- especially as David Attenborough, somebody who over the better half of a century has earned massive respect and trust from people all over the world -- would be wildly irresponsible.