This theory suggests that electromagnetic radiation can be understood in terms of quantized particles, a fact that has immense experimental support.
The fact that atoms, the larger of which we can directly observe individually, behave like waves also explains why the duality exists.
Everything being a wave does not solve entanglement. At least it's not clear why it would.
You're assuming that the quantized particles are not also waves.
As far as adam, you'll note that smaller waves are much easier to spot in the ocean then really large amplitude waves. The fact that we see Adams behaving his waves could me or not the ways are small enough for us to see them.
Quantization is real. But I've never seen any phenomenon that can only be explained in terms of the full concept of a particle (which is a decidedly nonrigorous one in any case), and while the concept of a quantized wave is certainly counterintuitive, I'd argue it's simpler and more consistent than wave-particle duality.
Light is never a particle, it is always a wave. It only appears to us as a particle.
Think about that! It means also that everything is always a wave! And if everything is a wave nothing is separate from anything else. That will explain spooky action at a distance.
A particle is only a probability wave. And our mind cannot handle probabilities, it needs certainly. Do to create certainty it collapses the probability to provide us with the most probably outcome.