It does seem strange, but there’s some possible rationale behind it. If the rule is not currently being enforced, it could be because refs feel the level of the rule breaking is not proportionate with the level of the punishment. Decreasing the punishment, as well as increasing the severity of the rule breaking required to incur it might induce refs to be more inclined to enforce the punishment.

This is the only plausible explanation. The refs don’t want to turn the game on a keeper wasting a couple of seconds. That said, various timekeeping tasks especially, but Association football in general has always had a sort of impressionistic philosophy for officials, tasking them with keeping the game moving and more or less fair, but I don’t think that system has held up super well in the era of high tech and higher stakes, though I do fear they risk losing something magical about it. American football is the absolute inverse, with a dense and legalistic rulebook and false precision that comes of pretending that (among other impossible tasks) the officials really see where the point of a ball lands under a literal ton of human flesh. That said, there is not the same level of resistance to objective standards and enforcement and rule evolution that you can see on the soccer side.