Agreed. But that's kind of my point. It's easy to wonder why light has to be bounded by a maximum speed because we can easily ask "why not faster"? For me it makes it clearer that there are fundamental aspects of physics/reality at work here to keep in mind that it's really the ratio of the smallest distance to the shortest time.
Yes, you do then have to ask "why is there a smallest distance" and "why is there a shortest time", but at least for these questions, I have an answer I can live with: because there has to be a separation between cause and effect, so there has to be a shortest time in between which two things can happen. If the time that it takes for an electric field to propogate a magnetic field and vice versa, which has no time component as far as I remember in the equations governing how this happens, has nothing limiting it to happening with a shorter time duration between the cause and the effect (which I believe is true, at least according to electromegnetic theory), then this is the shortest time.
A similar argument can be applied to explaining why there is a shortest distance.
So basically, for me, it is more directly meaningful to think of there being a smallest possible time increment (because there *must be*, otherwise zeno's paradox and all that), and a shortest possible distance (once again because there *must be*, for the same reason), than to think of there being a limit to the speed of light, which otherwise logically I can't understand, except in the terms that I described in this and in my prior post.