Clearly the ecosystem is far from collapse while we're in the middle of a rapid human-caused mass-extinction. What kind of propaganda are you smoking, bro.
Diversity vs biomass. If AI prefers biomass over diversity we're pretty much fucked ;) If it prefers diversity - at least some of us will remain in ZOOs ;)
The conditions necessary for biomass expansion are also conducive to biodiversity. Indeed, the vast majority of biological diversity is in the tropical region of earth. Species of life seem to have a very hard time in the arctic regions.
As for AIs, I see no reason why they should prefer any characteristic of ecology at all, if all of their needs can be met from silicon and electricity.