That “hum” is consistent with red-shifted emanations from a, well, big bang long ago. There might be a few nuances we haven’t resolved, but that explanation makes a whole lot more sense than “it may be [insert random casual biased guess here]”.
We DO have an idea what the Universe is: open your eyes and LOOK AT IT. When you think long & hard about what’s happening and what you see, you can model what it is. We KNOW there’s a flaming ball 93 million miles away that we go around. We KNOW that there are similar balls, by the gazillions, far away and arranged in ways that couldn’t possibly exist on the small scale your “young Earth” model demands to make any kind of sense. We examine substances here on Earth, and find they exhibit nuanced behaviors ... then we look at the sky, and see similar nuances, and their deviations match predictable & observed deviations we see in local experiments (like red-shift). If you think about everything you see - REALLY see - then it only makes sense that certain behaviors and distances and times explain what we see. Sure we don’t have it all figured out, but it does make a whole lot of sense if you think about it without biases like “whatever it is, it’s all gotta fit in a 10,000 year model”).
Otherwise, the consequence of your assertion is either (A) you can’t understand enough about the universe to even tell if you exist, or (B) God is flat-out lying to us by making things look like what they aren’t. Are you contending that God forged the Universe’s birth certificate?
That's part of what annoys me about these ICR articles (when they're not outright lying). They ignore all the things a theory does explain. It's like there's a conversation:
"Secular science": "We've observed A, B, C,...P. We have a theory for why we observe those things. If the theory is correct, we should also be able to observe Q, R, and S. We've observed Q and R. And hey, it looks like we've just observed S! Oh wait a minute, maybe we haven't observed S yet after all."
ICR: Hah! That means your theory is no good for A through R! And therefore God!"