The issue isn't that we can't do both, but that blocking CO2 into concrete will do next to nothing if we keep our habbits, since the quantity that's blocked is really small compared to what is released, and it costs a lot to do that (in ressources, not money).

We can't look at that and think of it as a solution right now. Maybe later once we stop putting out as much CO2.

I think it's less about starting somewhere and more about starting in the right direction.

Collective efforts to reduce CO2 emissions will do way more than trapping CO2 emissions, and at a lower long term cost.

Changing infrastructures to allow people to use less cars, buying food locally, eating less meat and more should be steps that are prioritiesed, but aren't really applied other than being mentioned once and then shrugged off.