Voluntary Human Extinction Movement

[Dmitry1983]

I mean that species can move closer to North and South poles. Only equatorial regions will probably become uninhabitable.

Nope, eventually, these effects will harm species even in the farthest regions of the earth.

No, those regions were doing fine when temperature was higher in the past.

This also assumes these species can make it there. 

Most species can.

Not necessarily. They may move there during a more habitable period only to then suffer the later drawbacks

What drawbacks?

by the way, permafrost affects things well outside its immediate region

I'm talking only about the Global North.

Now it is and in the future,  other factors will be the cause.

No, they won't

Under the climate conditions of the time by the method of warming that caused it. It can't be used as a comparison to now....

NASA already reports increased rainfall over Sahara.