Moreover, within the past hundred years before 1950 CE, radiocarbon dates are not very precise chronometers, because changes in radiocarbon production rate have by coincidence roughly compensated for
fixed decay rates.
Anyone who has the unpleasant job of mowing the lawn knows the
rate of sequestration anyhow (as Ferdinand says, this material will quickly
decay and recycle) but the point is the assumption of a
fixed sink
rate for human CO2 is wrong and nature will escalate human associated sinks to meet rising CO2.