If something is truly a universal constant, then it's part of the definition of what it is to be the universe. That we can imagine the constant being different

If something is truly a universal constant, then it's part of the definition of what it is to be the universe. That we can imagine the constant being different is really just an artifact of the imperfect symbolic language we've developed to describe the universe. Edit: It's hard to come up with a good analogy because obviously I don't have that "perfect" language at my disposal. But for example, a triangle fundamentally has 3 angles. We can imagine polygons with more angles, but it doesn't make sense to imagine a triangle with any other number of angles. If "the whole universe" were synonymous with "triangle", the notion of "universe with 4 angles" would be absurd. The ideal description would not even allow for that possibility.