No sir. I said they're not a HUGE threat at all. Did you perhaps read too fast?
The fact is, there have been quite a few smartphone / game / tablet small battery fires on airliners in flight (not just at the airport gate like with that Note 7). Fires from many types of devices, including phones, tablets, and crew handhelds.
None that I know of, ended up as more serious than a huge inconvenience, because of having to divert as a precaution and/or having some damage and residual smoke smell (such as in the case of an iPhone 6 fire which occurred 90 minutes out from Hawaii, where no early diversion was possible - the young college owner freaked out and she kicked the high flaming unit under someone else's seat, making it even more difficult for the crew!).
No, it's a HUGE threat. 200 of Note7 exploded among 1.4 million units in one month. If it's sold more than 14 million units, 24,000 of Note 7 would explode in a year and 72,000 of Note 7 would explode in three years.
Do you say iPhone also explodes? How many iPhones have exploded? 10 or 20 among 600 million units? It's pretty normal considering eBay sellers have been selling hundreds of thousands of counterfeit batteries.