All tips are made from copper, thus can easyly be reshaped.My iron has a tip shaped like a screwdriver. I can file it down to pencil shape.
BUT the copper will slowly dissolve in the solder, what not only will need reshaping but also will alter the solder. Especially in amateur use, not at the conveyor belt, where the iron most time is heated idle.
On the long termn tips are benefitial that are coated (Chromion on Iron on Copper).