"Stop getting worse" is a pretty major improvement. And yes, trees work as carbon sequestration.

Most (all?) CCS is not grabbing random carbon from the atmosphere. It's pulling it out of smokestacks so you can keep burning fuel while claiming it's green. It is not net negative even if working as intended.

Removing the GHG needs to be done but this is not how you do that. This is a way to say "look, we're trying so just let us take another hit of that sweet sweet crude OK?"

Plant trees. Simple.

Let the systems balance themselves out. Simple. Not fun but Simple.

CCS for industrial processes and that might one day be good enough to work on a global scale? Maybe but that's fucking ages away and it's certainly not this.

Stopping it from getting worse is like half the work of controlling climate change, and restoring biodiversity is the way of removing GHG from the atmosphere, not silicon valley techno bro fans

Which - barring a sudden, rapid series of unprecedented technological advances in our ability to manage the chemical composition of our atmosphere - is the rough equivalent of saying, "unexplode this bomb"

Trees.

In a very limited fashion it is. You can plant a forest and that amount of CO2 is what it'll be able to pick up. Trees will die, rot, emit their CO2 back into the air while new trees pick it up again. The system would reach a maximum equilibrium quickly and the relative amount of CO2 picked up isn't that high.

Most CO2 is actually processed by algae anyway