It does make some sense. Lets say you're making a game with a procedural world (e.g. something like Minecraft) which the player explores and makes changes to. Instead of storing the entire (potentially infinite) world, you just store the world seed and the changes players make. In that case, if the algorithm underlying the PRNG changes, the entire game would break.
There's enough scenarios like this that making a change to a PRNG algorithm is a very dangerous and breaking change. People rely on the fact that, given the same seed, you get the same sequence of values.
There's enough scenarios like this that making a change to a PRNG algorithm is a very dangerous and breaking change. People rely on the fact that, given the same seed, you get the same sequence of values.