The question of whether the physical structure is enough to preserve the information that makes you you is the key thing, and Myers is right to say we should be

The question of whether the physical structure is enough to preserve the information that makes you you is the key thing, and Myers is right to say we should be trying to figure out how to read the information off of very small brains. On the other hand, if you think that the physical structure is sufficient (I don't) then figuring out how to preserve whole human brains is pretty important. There's a long time to figure out how to read the information off the preserved brains, but any unpreserved (or improperly preserved) ones are gone for good. So I see why Hayworth etc are interested in high-quality preservation of larger and larger animals and aren't focusing on the reading portion. "I'm more inclined to believe their goal is to pocket lots of money exploiting people’s fear of death. ... Fruit flies and nematodes won’t pay them a substantial annuity to have their brains vitrified and stored, and their gratitude upon being resurrected wouldn’t be at all remunerative." I've met Hayworth, this really doesn't fit him. He is genuinely interested in better preservation methods as a way to fight death. As a neuroscientist working in connectomics his association with cryonics only hurts him professionally.