To put it into perspective, we are effectively terraforming Earth today, though maybe not in a good way.

We have converted most of the land to agriculture and released maybe trillions of tons of greenhouse gas in the atmosphere, there are 8 billions of us working on it. And what did we do? Increased the global temperature 2 degrees? Made the sea level rise a couple of meters?

It may be bad for us, but compared to terraforming a planet like Mars, that's nothing, and we have the entire humanity industrial complex to do it while on mars, we need to build everything, starting from a hostile environment.

Talking to computers and expecting computers to answer coherent English was science fiction 4 years ago. Don’t lose faith

I would not be so pessimistic. Look what the https://en.wikipedia.org/wiki/Cyanobacteria have done for our atmosphere.

Maybe we’ll turn all of Mars into paperclips with our efforts! Glorious paperclips. First Mars, then the universe!

If you can kick off self-sustaining biological processes it’ll happen on its own eventually, but you’d just be looking at generational time scales to do it.

Of course you’ll probably have lots of side-effects.