We actually did see a decline in total consumption of coal from 2014-2020, which of course is negative growth--which more than refutes your claim about slowing growth never happening. The IEA global forecasts are fairly flat for coal. (source).
The Chinese government is all-in on renewables, but they have stopgap coal projects to tide them over as consumption rises even faster. As seen in the USA, that won't go on forever if trends hold: we've already passed Peak Oil and electricity consumption has plateaued, TFA notwithstanding.
With regard to McKinsey, fuck those lampreys.