I saw this over the weekend and started to reply but figured my comments weren't value added so I just left it alone. This type of "advice" is why I left some FB groups and bigger forums where the common practice is to keep BPs at 70%+ at all times, and you're going to get spoken to if you suggest anything different. Don't take it too seriously, places like that will tell you how wrong you're doing everything and never offer any real advice on fixing it.
I'll echo what everyone else has said as far as your humidity goes. I think your parameters sound fine and I'm usually sitting somewhere between 55%-65% depending on the last time I misted. I also bump it up a little during sheds but I don't have to soak the substrate to do so. A light misting once or twice a day and/or adding a humid hide took care of all my humidity issues when I was keeping in a glass 40 gallon.