DNA Proves Existence of a Designer

[Anomalocaris]

Stellar fusion that would have had to have occured spontaneously though, right? And what caused this stellar fusion?

No, stellar fusion does not occur spontaneously.  It has cause and stimuli.  Not that this matters, because we're already well past where you chose to insert the meat fairy...huh?  How's the whole

"Dear internet, why am I so inexcusably dumb?" project going, anyway?

I think current predominant thinking amongst cosmologists who actually care to form rigorous hypothesis that can in principle be tested is the cause of actual occurances of Stellar fusion is believed to be ultimately spontaneous.   The cause is quantum fluctuation very early in the history of the universe that made the density of matter and energy slightly uneven.  These unevenness expanded with the early expansion of the universe until the scale of unevenness is hundreds of millions of light years.   These unevenness then led to runaway gravitational clumping of matter into protogalaxies and within galaxies molecular clouds, and the molecular clouds further collapse Spontaneously under granvity until pressure and temperature sufficient sufficient to initiate stellar fusion occurs.

If there was no spontaneous quantum fluctuation, then the universe would be perfectly smooth and even, and these would be no nucleus of overdensity to draw in more primordial hydrogen and helium for the process of stellar nuclear synthesis to occur to create higher atomic weight elements, and from there the complex chemistry needed to create and support life.

The initial impetus for the Big Bang could well have been a purely random quantum event. The fact that the result of Big Bang can organized themselves into star, planets and biochemistry is also the result of random quantum events. One thing to note is that the fact that an event can be triggered by a purely random trigger does not mean its outcome is necessarily also purely random.