Good reminder for all and a good read. All Very true.
Slower charging is better as it creates lower heat levels but I'm sure some of the newer batteries that are meant to be fast-charged have technology that accounts for it. Heat is what kills batteries, not cold.
I used to work for Panasonic and batteries are what they do very well. Our Toughbooks had/have an Eco Mode that charges them to 80% and holds there. The reason is that the last 20% creates the most heat. The last 20% can be charged in less than 30 minutes. Using this makes a HUGE Difference. I have a 2007 laptop that still lasts 8hrs on the original battery because of this. Most laptop batteries don't last that long.
Even Maha batteries for my rechargeable system including tons of photography gear, suggest using low and slow charging. Not only is it better for the battery life but you'll get a deeper longer lasting charge.
Ironically as I post this my phone is at 81% and going strong. One thing I love about the Note 5 is the wireless charging so I can now effortlessly and easily just set it down for short burst of charging while at my desk at home or the office. I tend to charge it overnight to 100% but then during the day I like to keep it in the 50-80% range. This way if I head out for a long night, I can bump it to 75-100% range easily as I shower/get ready.