Further your post is histrionic. ‘Environmental collapse’, ‘destroying our inheritance’, ‘alarming rate’, suggests an individual who is pushing an agenda rather than rationally appraising the current state of the ever-changing environment and biological ecosystem.
Well, being wealth has been increasingly concentrated in fewer people and wealth has always been on the side of fossil fuels and climate denial, would that not illustrate a plausible narrative?
At the very least, those aforementioned people probably could have done something about these issues before any of us knew about them.
Without knowing the list, we can't infer a lot about the impact or lack of impact. Some of those species could be obscure hybrids without real impact, the lack of other could be potentially catastrophic; but the effects would have been forgotten by now and assimilated as "the new normality". This is a glimpse of 1950's.
About 200 plant and animal species go extinct every day.
My money would be into the molluscs lost as collateral damages by the effects of the Saint Lawrence Seaway, and the birds by a combination of touristic development plus Mikonia tree invasion starting on 60's and 70's.
Just because it has happened, doesn’t mean we should endorse and accelerate it. What we do determines the future.
Why?
However, in my opinion, it's a rather uninteresting hypothetical because human activity absolutely does play a huge role in the extinction of species today.
What about the ramifications of doing so?
I’m not sure fiddling with natural levels of extinction are smart.
Now that a species near the top of the food chain is missing, what species can grow and change to fill the gap? Isn't that evolution, you respond to a change in your environment.
>rationally appraising the current state
both are an agenda. You can't escape ideology.
"it's just a series of ever warmer summers, nothing to see here" style suggests oil industry?
Regarding extinction, my suggestion is biome transplants. Take a endangered biome slice and transplant it where the temperatures and conditions for the biome will reemerge post climate change stabilization, preferably in an area where humanity has no economic interest.