I think the same… even this is a new filament, is still need to dry it first…
It depends on the climate where you live and the quality of the filament on arrival.
I have never dried a filament I just purchased and I have only ever dried two filaments after opening them.
I live in the U.K. and humidity levels are typically around 70% according to my devices.
I now own two filament dryers, the latest one, the Sunlu S4 is because I am about to experiment with carbon and glass fibre filaments.
I have never had a problem printing with any brand of TPU nor dried it at any point. I have also been using the TPU for AMS with the same experience.
so is in Indonesia, the mumidity can up to 70%…
even though I keep my filament in the air tight box, it still have the issue of birttle. if I have a filament that not use for a long time, i must dried it, if not, I can stuck in my ams or extruder. it happend many times on me…
I even ever print TPU while the filemant still dry in the sunslu s4 because the TPU keep result stringing while printing.