I doubt those figures represent all cryo-preserved persons.

I seem to have described my numbers a bit off, so I'll try again to try to make sure the confusion is cleared up:

There are currently around 2,000 living people who are members of cryo organizations.

There are currently around 200 dead (or 'dead') people who have been cryo-preserved.

the degree to which extreme cold destroys brain matter (on a molecular level) is one issue.

I don't disagree with you about that. However, given the range of options currently available on the table, if I have a lethal heart attack this year... there don't seem to really be any other options I /can/ make arrangements for. It's possible that the damage you describe will, one day, eventually be able to be repaired; in which case, no worries. Or, it's possible the damage you describe will never be able to be repaired; in which case, in another sense, no worries.

(Part of my current consultations with my lawyer about my will, is to arrange for as much of my personal writing and similar data to be stored with me - and at least part of the reasoning for my doing that, is to provide another set of data about the way my brain functions in case it might help with future repair efforts. It's even more of a longshot than cryo itself, but since I'd like to have that data with me anyway if I'm revived, it doesn't seem to be a negative.)