The article is focusing on trading gas at low prices, which means that the transportation infrastructure is there, to get it to a useful place (otherwise it wouldn't be low-price gas, it would be unsold gas). Gas is flared when it can't be sold, but in this case we see gas being sold at extraordinarily low prices.
New ethylene plants are being built in the US gulf coast area. Here are some links:
https://news.exxonmobil.com/press-release/exxonmobil-starts-...
http://analysis.petchem-update.com/supply-chain-logistics/in...
http://analysis.petchem-update.com/supply-chain-logistics/us...
New pipelines are presently being constructed:
https://napipelines.com/oil-pipeline-report-new-administrati...
The coming increase in gas prices off the absolute bedrock level they are at now cannot be priced in to present-day gas prices because gas is so hard to store. However, it is probably already priced in to oil company shares, so even though this information is true I doubt there is any money left to be made off of it.