How accurate is this explanation of memory? I'm no cognitive scientist, and this video I'm about to cite is certainly not claiming to be a good cog sci resource, but I have done some studying up on neurology and some of the parts of this guy's (detailed) explanation of how memory works seems different from what I understood. 

The video: Film Theory: How to KILL DEADPOOL! (at 6:03) probably gave 85% (or 99%?) of the 7.7 million viewers who watched it the most detailed explanation they'd ever received of how memory works. I'm just curious to know how much of his explanation is accurate. 

So, how accurate is this explanation of memory?
Really nice video and pretty much seems to be correct. The only thing that i am questioning is about the patterns. He says they won't exist after regeneration. However, just a thought: if you would replace one neuron of a network with a new (exactly the same but younger) neuron, it would receive the same input and produce the same output right? Then why would a memory be lost. Taking a step further, if an entire network is replaced, wouldn't the hippocampus with Long Term Memories (LTM)s still be able to give the same input to that network, which would then show a similar activation pattern, thus remembering?

To finish my short argument. Assuming that the hippocampus indeed stores the patterns for LTMs and the cells in Deadpool regenerate in an identical way, then I believe that LTMs may still exist after regeneration. Only when the hippocampus is affected, LTMs may be lost. I base this just on my thought experiment however and have no scientific proof. Maybe you can ask the YouTube guy for some references.