I agree, although symbiotic organisms tend to gradually evolve into symbiotic relationships often from antagonistic relationships. Yet, your logic does show my premise is incomplete. I will adjust my claim of alien contact being 100% likely to be dangerous to being 99.9% dangerous. Another alien form may be machine evolution or a new form of biology that is not as cross compatible as earth life is internally because earth biology may likely have evolved from the same root ancestors, thus all earth symbionts may be compatible in part because they all originate from a common phylogeny.

All life survived by competition for space and resources due to evolutionary factors. Therefore, we can expect with almost inductive certainty that aliens will be hostile and extremely dangerous. Even contact with alien single celled organisms or nano-replicators, if the alien is a form of machine intelligence, could contaminate our biological environments in ways leading to the end of the human species. Thus, sending out locational and vulnerable information is almost certainly a misguided idea. Also, it places all humans at risk and maybe the choice should not be ethically made by only a few scientists when the whole future of humanity could be impacted. We are humanized by our stories. How will aliens be humanized to co-inhabit our planet and fit into our stories? We humans have all our eggs in one basket being on a singular earth when a simple asteroid could end our miracle of existence including our grammatical speech and cultural stories. We may be wise to likewise be suspicious of interstellar objects landing on our planet like one did in 2014 due to the potential for panspermia vehicles with alien biological lifeforms and/or nano-replicators capable of reconstructing machine intelligence systems that could be used to model potential terrestrial rivals consistent with Pentagon sightings since 2014. Be safe humans. We are kinda special.

Most of the Pentagon document on UAP sightings refers to events from 2014 to present. Consider if an alien civilization sent a panspermia payload vehicle to many exoplanets including our Earth. An asteroid would be the optimal camouflage as they would be common occurrence for all planets, but the asteroid would have to be large enough to survive travel through orbit and not too large to destroy the landing area. A panspermia payload could include not only alien biological organisms, but nano-replicators that could assemble advanced technologies to assist those biological organisms colonize a new habitat. Thus, geographic timelines of all interstellar events and timelines of all credible UAP events may help Earth communities monitor the progression of possibly related extra-terrestrial anomalies. Efforts to send a roadmap of Earth to other civilizations may underestimate the pervasiveness of evolution in nature which suggests that all alien species will be survival competitive and in all probability, close to 99.99% extremely dangerous and hostile--unless they somehow "humanized" themselves with our literature and media on route.

Cryptocurrency may also lead to increased general inflation because cryptocurrency competes with traditional currency for the purchase of goods. Since the rules of regulation are different, cryptocurrency may be advantaged with less oversight. National cryptocurrencies may provide the convenience of using cryptocurrencies without providing the means of an alternative under-regulated economic system operating within national borders. I would not be surprised if many nations develop their official versions of cryptocurrencies and then ban all competing versions that are not themselves national cryptocurrencies from friendly nations.