Earlier quoted context omitted.
Because every physical thing has a start. Some time-bending supreme being that creates time and existence itself can overcome that "start" because of it's super powers. That sounds dumb but it's more convincing than saying yeah it's just always been here. How has it? I'm too dumb to wrap my head around that. Everything has a primary mover unless it has the super power to transcend that.
"Because every physical thing has a start." Does it? Everything we know about the world is either due to observations or inferences from our observations. We have not observed what was at the start of the Big Bang, nor prior to it, so for all we know whatever that was was qualitatively different than what came after, and really did have no beginning. "Some time-bending supreme being that creates time and existence it…
Do you have any good reading on the idea your postulating?
"A being that creates time has its own additional problems besides.. such as how could there be anything before time? What does that even mean?"
I can't answer. I have to go back to there being some all powerful god that had the power to create everything, so he has the power to transcend time. Or God could be an instantaneous and motionless creator, and could have created the world without preceding it in time.