If the charging method makes the device hot, yes. Leaving it plugged in will eventually damage or prematurely age the device. If the charger doesnβt heat up the device, it doesnβt have a noticeable effect to me. I had two warranty replacements of my 2018 iPad Pro and thatβs the only cause I can think of. Apple Support said it wasnβt a common issue, but it wasnβt obviously my fault either or they wouldnβt have replaced it. I was using the 30W charger. I stopped using, but tried it out last night and sure enough, it makes my 2020 iPad Pro 11β heat up too if I use it while charging. The 18W usually doesnβt and when it does itβs not as warm. Thatβs charging while using YouTube specifically.