Momentum is mass times velocity
That is an over-simplification. Light has momentum yet has no mass.
We've been bouncing microwaves around cavities for a long time, and we've never come up with something like this.
I would stay away from arguments like this. Turns out many of the answers to "difficult questions" are right under our noses, sometimes literally. For example. We've been working on fighting MRSA for a long time. So happens that bacteria in our noses and gut secrete anti-biotics that have thus far killed MRSA with a 100% success rate in rats.
Doing something for a long time is a pretty bad metric of useful experience or mastery of a subject. You need someone who thinks differently.
Your code should be more efficient!