"requires multiple agents to effectively preserve all major cell components"
No it doesn't. Two agents, formaldehyde and gluteraldehyde are more than adequate. It's a common mixture.
I read the link/links you provided. I agree with your basic points and those of DeWolf.
This subject has come up time and again on cryonics forums. And those activists who are most knowledgeable have always claimed that it is not comparable to cryonics.
But it seems to me that it certainly is worth investigation.
And those cryonics activists who are most knowledgeable are also heavily invested in cryopreservation, in that they have spent years dealing with and learning about that, so that there is bound to be some bias on their part.
I only wish that I myself could investigate fixation. What a benefit it could provide to us and so many others if it panned out.
I wish I had the chance to do this sort of research myself. It actually sounds as if one person could do a lot of research. You could use animal brains (basically for free). The two chemicals you cite are familiar to me and certainly would not be all that expensive.
I wish I could do this. Unfortunately I have to work to earn money in part to maintain my OWN cryopreservation funding. Even today I have to do some professional reading.