That's why your parent's graph went only to 2012. There's no point in arguing with adventured, they're obviously only interested in using skewed stats to bolster their world view.
The very first hit on Google for "Chinese" "Coal" "Consumption" is a January 2017 article from the World Resources Institute whose title reads, “China’s Decline in Coal Consumption Drives Global Slowdown in Emissions”
That's not in fact true any more. China's coal consumption peaked in 2013, and has been falling for 3-4 years.