I mean, this statement is literally true. It just isn't very useful.

If we dropped our carbon output to zero overnight, then our environment would consume about 4 gigatonnes of carbon dioxide a year, and we'd slowly lose the excess CO2.

Given that we've emitted a mere 1000 gigtonnnes of CO2, we'd be back to pre-industrial levels in a mere 250 years. Yes, things would warm a couple of degrees in there, we'd lose our costal cities and a lot of our food production, (minor details, says the man born in London, 30 years in NYC, now living in Amsterdam, all places that would go!) but 250 years from now, we'd be back where we were!

This isn't really a super-win, of course, but the bad news is that isn't going to happen (and of course it doesn't take aerosolized pollution into effect). We aren't going to stop emitting overnight: even if we threw everything at the problem and everyone coooperated, it would take us decades to reduce our emissions to below the 3-4 tonnes steady state level.