If the aliens have been associated with Earth for a long time, they may have had multiple reincarnations on Earth. However, if not, it may be their first reincarnation on Earth.

And each person understands and talks based on their own experiences.

Therefore, the topic of whether reincarnation occurs only once or multiple times becomes a subject of discussion.

For some people, reincarnation happening only once (the first time) is the truth, while for others, it is the truth that they have reincarnated many times.

Also, sometimes it is just a difference in words and expressions. Generally, when people talk about reincarnation, it means being reborn as a human with a physical body, so the repetition of physical aging is reincarnation. And the soul is constant. This is what is generally said about reincarnation.

And some people use the word "reincarnation" in a different context. For example, they use "reincarnation" in a context where the soul does not die, so there is no reincarnation.

This is a matter of definition of what "reincarnation" means, and the expression differs depending on which definition is followed. If "reincarnation" refers to the physical body, then reincarnation exists, but if it refers to the soul, then reincarnation does not exist.

Despite this, there are cults, religious organizations, or specific spiritual groups that do not seem to understand these concepts well and mix them up.

There are cults and religious organizations that claim that reincarnation occurs only once, even though it is about the physical body, not the soul. However, in reality, there are groups where the souls of aliens who have come to Earth from space mostly reincarnate only once. So, for those kinds of people, that is the truth, but that is not always the case.

Especially for groups of people who have reincarnated many times on Earth, they have repeated the cycle of reincarnation on Earth many times, so physical reincarnation exists.

However, there are always a certain number of people who, for some reason, study this in a cult or something, and proudly claim "there is no reincarnation" with a lack of understanding. For example, in Christianity, a desert religion, there is an implicit worldview that life is only once, born in a harsh desert environment. On the other hand, in Asia, where people have witnessed plants and trees being reborn many times, the value of life and death being reincarnation is rooted in the foundation of religion. Moreover, even if it is a cult that claims to have been channeled from space or taught by aliens, it is often just the aliens talking about the continuity of the soul, and it often does not reflect the reality of Earth.

I think that in some cases, when aliens come to Earth and know the continuity of the soul for the first time in their reincarnation, they may say that there is no reincarnation in order to preach the universality of the soul. That is fine in itself, but in many cases, reincarnation clearly exists for people on Earth, so it is unreasonable to argue that it is true for all cases just by taking a part of it.