The short burn time is offset by ease of use and ease of manufacture, to allow you to burn as many as needed in a row.
Here I'm thinking how that would be best implemented in the game, regarding the user interface and such. For example, if the player character first ignites a päre for additional light, and then starts a woodworking / crafting operation which would take 3 hours - should there be an option to "automatically start a new päre before the previous one is burnt out", or should we assume the player manually pausing the crafting task every now and then to press a few more keys to start another päre to keep the light going on? Or should it be so coded, that a next päre is automatically lit always when the following conditions are met: "there is a päre-holder with a lit päre in it, and one of the adjacent tiles has a stack of päre, and there also is an npc or the player character occupying a tile which has access to both the stack of päre and the päre-holder. And if so, should we run some additional checks that the mentioned character has at least one operational hand, or should we assume that even when both arms are fractured, the task can be completed by using feet and mouth?"
(sometimes I wonder how seemingly simple additions grow to become surprisingly complex design task when it comes to the actual "how to best simulate this in the game")