What’s with all the recent boasting about rising propane exports? I thought propane storage was for energy independence and low prices here at home?

Likely that message is for investors, not for you. But, yes, lots of boasting about exports. From an outlet called “Shale Plays Media”:
“Since 2011, exports of propane from the U.S. have been on the rise at a record setting pace. According to the U.S. Energy Information Administration (EIA), in April 2015, exports averaged 636,000 barrels per day, which surpassed levels from April 2014…..Thanks to numerous projects building new export facilities and expanding already existing export terminals, waterborne export capacity has increased by 400,000 b/d from April 2014 to April of this year. By the end of the year, two more projects are expected to be complete….The increase in propane production is mainly due to the increase in natural gas plant production, which is related to the expansion of shale gas and oil development.”