The only thing we know so far is from two minutes of ATC audio.

That’s literally it. Anything else is speculation and extrapolation.

But don’t let that stop you if you already know what caused the tragedy.

It does not at all mean that this controller was overworked when this crash happened; that would be failed reasoning and misuse of evidence. It just raises the question, which should be looked at.

It's scary that so many don't seem to know the difference. This is how misinformation starts and spreads.