On the recommendation of others on this forum I bought Sterlingtek LP-E6's for my 7D Mark II and they have worked perfectly in the Canon battery grip. Since the capacity is almost 30% higher than the Canon batteries it doesn't surprise me that you'd see discrepancies in the charge level, but at least they communicate with the camera.
Also bought Wasabi and BM batteries for my T6s which uses LP-E17 batteries, however those do NOT communicate with the camera so do not show current charge level, however they still work great and at a fraction of the price I'm happy to give up the battery indicator.
The truth is, all batteries are subject to shorting, overcharging, overdischarging, etc. including Lithium Ion, regardless of the maker. As an e-cig user I've seen all too often what happens when people charge their batteries with the wrong charger or short them out by carrying them in their pocket full of loose change, however these problems can present even in regular usage. Batteries failing is not a new thing, but as we use higher and higher powered batteries the consequences of battery failures is becoming more severe, which leads to more news coverage and scaremongering. Treat your batteries well, use the charger that comes with them or at least a charger that has the correct output amperage and voltage, and if they get damaged (including the wrapper coming off or even getting scratched - the wrapper is the insulation!) dispose of them properly and immediately. In regards to batteries, when in doubt throw them out! Also, while I do use aftermarket batteries, make sure you buy a reputable brand, because mislabeled batteries (counterfeits) sold commonly on ebay and Amazon are a major cause of many battery failures, and most of the people buying these batteries probably don't even realize they bought a counterfeit.