A sad truth was revealed to me, as well as a context.
I said earlier that the "molochians" have transformed their astral bodies into lizards whose heads are literal septic tanks. The image of this somehow appeared to me when I was rather little, seeing the structure of a brain energetically, but it was just a tank filled with shit, like the dung pit kept by farmers, to later spread on the fields as fertilizer.
The image and term of this was just so normal because it was something I'd see, everyone had one, so it's just there. But if you live in a city you may not know what it means or think its smell and mere existence is something disgusting. Maybe being used to this also makes the thing about Indians meaningless. Cow dung doesn't really smell very bad, being used to seeing it, it's just a part of the fields and the environment.
The mental state of creating this is one of letting the "gut brain's" function move to the head, or be retained in the head. Normally it's meant to be automated and then the nerves do this without you thinking about it. The fully regressed molochian has not only kept this function in the head, they have also externalized it to be the function of society around them. It's been outsourced on a mega-scale, where structurally, energetically, and from a body-function perspective, the whole of society is just there for artificially keeping up this function of the gut, which any baby should have automated during their first years of life. It's all been placed as subordinate to this structure, and nothing beyond it can be seen. Because the gut expects to constantly be fed, it does not tolerate any interruption, and will act out with uncontrollable reflexes of "hunger" if there is the slightest hint of disturbance to this outsourced system. That is why humans can do pretty much anything today and in the past. Countries will go to war, a collective psychosis takes over and they cannot be argued with. It's because the "gut" was not fed, and there is no real brain to function as a buffer or restraint, the hunger is acted out through the organs, the limbs of the welfare state, be it made for the nobility in the past or the middle class today.
What appeared to me, was the image of what created this horror. Though the ancient vampires had grown up in periods where things were fairly normal, and they had all the time needed to develop into being physically and psychologically normal on a personal level, the society and their external traditions over time regressed into this "septic tank" state, with their preferences and tastes just being different representation of hunger of the lowest and dirtiest kinds.
Even now, when having moved to the astral, this structure remained, and over time since the dimensional shifts and splits started, they had also started leaving that space. It seems their actual achievement was not much to mention, they re-incarnated as various members of regular races in the galactic federation, their memorized knowledge of atlantean magic not even applicable after leaving their position in the system, as the formulas were only commands to be used inside this egregore. They still work as command formulas for spells, but you'd need your own power for them to take effect. It all relied on this septic tank system when looking at the external mega scale.
This was why the magic system of vampires had lost its power, and needed to be rebooted. Atlantean magic works as a system of expression, but it needs to be connected to an "engine" of some sort, and that engine was a very low system in the past. It was not connected to the astral library of vampires.
The reason for why Gensokyo chose to keep the vampires in the age range of up to 2000 but not beyond, may be that they had not yet regressed into the "septic tank" kind of thinking yet. Being older in this situation is not better, when the system causes psychological degeneration with time.