I see all sorts of answers online, but am not fully convinced. I tried finding some research on the longevity of clothes between wash and wash + dry. Considering that it dries for hours just the mechanical movement should damage the clothes I would assume?
Its the heat, mostly. If you use the low or very low/delicate settings, it will help.
I find that there is no benefit from using medium or high heat. It just shrinks my clothes. Low/delicate doesn’t and I haven’t noticed any damage.
Other trick: wash and dry pants inside out to avoid fading. Also, this stuff only applies to fabrics that are dryer safe, obviously