The phrase "failure to adapt and compete" is rather facile in this context. I mean, sure, it's true, but to what end? It's essentially placing the blame on the victim of extinction. It's the equivalent of cutting down a jungle and then when a tiger walks out you shoot it in the face and shrug "I guess he failed to adapt". Yeah, to the actions that we all took.

I'd argue it's more valuable to just say that we're clearly damaging our own environment and causing the shockingly fast extinction of multiple flora and fauna. When you get to the stage we humans have of having this level of control on our environment, it's no longer the case where other species need to adapt.