The problem is that we are adding too much CO2 to the air. In fact, we have already added too much CO2 to the air, to the point that we will have noticable bad effects within the next few decades. More importantly, all this stuff has huge inertia, so if we stopped producing CO2 right this second, we would STILL blow past CO2 goals.

If we EVER want to get back to today's climate, you know, "normal", it requires removing gigatons of CO2 from the air. From a pure chemistry energy of reaction standpoint, that will be enormously expensive. There is zero technology that can change the physics fact that combining CO2 with something that will sequester it will take more energy than we ever got out of it.

Petroenergy is explicitly a loan. We have to pay that back

I understand that, but we may have to adapt to new normal with noticeable bad effects. That's where technology can help. Not sure we can remove that much CO2. Maybe if fusion becomes a thing, it would give use enough cheap energy.

There's all kinds of tipping points that are plausible in the next decade that would lead to accelerating warming. Permafrost melting releasing large amounts of methane; gulf stream redirecting; extended drought in climate critical regions; large ice shelves collapsing, etc. It's gradual until it's not.