For one thing there are like 500 episodes that are roughly 2.5 hours each, that's 1250 hours - there's a major opportunity cost there.
It may be worth watching the first few dozen streams sequentially, since most of the foundational ideas are introduced in those episodes. And then from there, you can browse for specific topics using the episode guide as they become relevant to you.
I want to prepare myself and skill up. Please give me a headsup if there is a better way to handle this ? (maybe tutorials on LearnOpenGL or Vulkan tuts). I know handmade hero focus is not API and I am totally fine with it too as it focuses on teaching the developer how to think in the lowest layer close to hardware.