Well, ignoring the salt there for a minute. You're missing an important point.
Thargoids are a hive mind species
Sorry, no proof of this. Only conjecture, based on the alleged society of the aliens and their alleged insect-like appearance. Something can live in a hive, with a social imperative that promotes the hive over the self, and be 'genetically' (ór whatever serves similar purpose in alien physiology) predisposed to this activity - but it's not a "hivemind" - the word was badly coined and has since been abused by fiction and popular culture to result in the sort of nonsense.
The concept of "hive mind" is a misnomer. It's applied to a hive mentality, where chemical signals and other communications are used to direct activity. Nothing to do with "mind" . Creatures with a more complex cognitive caps can think for themselves and are not bound to follow (for example) pheremone urges despite them having a significant influence.
In fact, the closest thing to any ED defiitive statent to "hive mind" is here from the unofficial and non-FD source "Elite Dangerous wikia" which states:
"Not much information has been obtained about Thargoid society or culture. The only known fact is that the society is hive based, with no sense of close family. It is thought that the society is divided into colonies, possibly along the lines of ant colonies. The Oresrian and Klaxian dynasties may be two such"
No mention of hive mind, only a hive based society (which is curious, since no homeworlds nor larger social groupings of Thargoids has ever been verified) - One can live and exist in a hive and operate for a hive and still ahve individual choice over whether or not to attack some random human.
The "hivemind" of typical earth-based insects work because insects cannot support complex 'brains' nor have the energy to use them - for a larger being (presumably intelligent) - this notion is not condusive to a successful evolutionary model - the benefit to intelligence is an ability to think for oneself and act independatly - whilst a principle of ethics or "morality" which favours the benefit to the community (hive) rather than the self is advantageous - this again, does not preclude choices such as whether to attack or not attack a particular human.
It has also been previously that Thargoids are insect-like - note that again, this is solely due to appearance - and largely the result of "traveller's tales" - no reliable reports are available detailing scientific study of any actual specimen ... This is also somewhat countered by the popular consideration that what ew encounter as 'ships' might actually be a living being to some extent or other - though given the FACT that so-called "Barnacles" were actually engineered from other lifeorms - I think it far more reasonable to consider that Thargoids have enginneered a lifeform which serves them as a spacefaring vehicle.
