Major reversal in ocean circulation detected in the Southern Ocean

The problem is that it is not ok for every other animal and plant sharing the planet with us. The climate is changing at never seen rates apart from the aftermath of asteroid impacts, mega eruptions, and other such events.

It is so fast in fact, that animals especially don't/won't have the number of generations necessary to make natural selection make them evolve in the right ways to survive a warmer Earth.

Finally, it might not be Ok as the planet could become uninhabitable. For example, given enough CO2/other greenhouse gasses the air becomes warmer to a level where it can hold enough water vapor (a more powerful greenhouse gas than CO2) that the planet could enter a spiral where it get's warmer, warmer air can hold more water vapor, which makes everything warmer, ... until you get to something that is closer to Venus with its super high greenhouse gasses and hot atmosphere.