So, i haven't seen anyone saying but.... If im crafting a Seaglide, i clearly have the resources. So why should i go get more for 3 minutes? I wound't be making a Seaglide if i needed more resources.
No.
There is not a single reason to have this feature.
Realism =/= Fun. Why is this even an argument. It would also be realistic for the player to manually fix the Seamoth after every expedition, taking a good 3-4 hours to do so.