The point of climate change is precisely that it changes the conditions in virtually all our habitats. The species in those habitats, being largely adapted to their existing range of conditions, may not be able to adapt to those rapidly changing conditions, and as a result large parts of those ecosystems collapse.

Just look at any prior major climate change event, for example the Permian extinction, thought to be triggered by major volcanic eruptions causing severe climate change - https://en.m.wikipedia.org/wiki/Permian–Triassic_extinction_...

When you’re talking about something that wipes out 70% of terrestrial vertebrates and 80% of marine species, you can understand how the concept of “preserving biologically diverse habitats” is incompatible.