IMHO it is technically impossible to achieve biological immortality as a carbon (666) life form!
This guy is also ignoring the most fundamental aspect of life which is its "cyclic nature"! Besides, Carbon energy forms are only strong in their purest forms, like as a diamond...
In addition, he is also ignoring all the other key environmental influences that can directly affect and terminate biological life...
Besides, even if he was able to make up a strong bio machine, we already all know that ALL MACHINES ALSO BREAK DOWN...
IMHO here is the REAL deal: as he described in the article, ultimately all life is just SOFT CODE! So, given enough memory, all the soft code could potentially be "digitized" and stored on a daily basis, so if/when the bio body died, a new body could then be manufactured and the stored bio code reloaded into that new body!
But, to a certain extent, this is ALREADY what is happening in reality with all life, even though we don't remember most things after re-loading into a new body, although under hypnosis many are actually able to...
eom