'The blob' is a melting pot archetype, the notion of a single culture that benevolently consumes others. It is reliably deduced from history and it's origin is a simple perversion of unrelated human ambitions. Melting pot or political interests have carefully cultivated this pattern of thought across many melting pot societies in history, and in each case it leads to ever growing conflicts which are resolved by 'assigning mortality' to indigenous interests i.e., killing them.
In distant history, it was necessary for an area's tribes to unite to fight neighboring tribes.
One tribe would ally with another to attack, or defend against, other tribes.
This led to bigger and bigger blobs, roaming mixes of tribes, empires hungry for easy wealth extractable from weaker societies. Those smaller tribes that had not militarized adequately usually disappeared or quickly switched the focus of their economies to military development and struggled for favors from the ruling empire blobs.
A person can easily understand the benefits of such blobs, basically "it lets us get rich and make the rules".
But those benefits have largely evaporated and there is some risk of the blob mentality leading to catastrophe if it is not stopped.
Years ago it was possible for one country to militarily conquer another. All that was needed was adequate weapons and a confusing excuse.
Today warfare has changed dramatically.
Most developed countries have tens of thousands, or more, of non military individuals with the knowledge necessary to create weapons that can silence a large army. The result is that empires are restricted to attacking undeveloped countries, countries with populations that can be herded into groups, armies, to fight with less dangerous weapons. Conflicts between major countries today, when they happen, are largely formalities. The leaderships of the conflicting countries choreograph the conflict so that it will be contained.
And yet, the ambition to form a conquering blob remains.
Now it is a "union" or "unified community" or whatever. The ambition is the same as always, to have "our group" beat "your group", but the proponents have evolved a complex rationalization couched in benevolent peaceful phrases. They pay lip service to "tribal rights" and "diversity", but it is the same disease morphing into a new form.
So the point that has to be clarified is that the retreat to a "one world society", a blob, or collection of blobs, is not a step forward. It may offer safety in some peoples' minds, but it is the safety of the cemetery.
The central question is whether blobs have any genuine civilizing effect or other benefit.
Does forced assimilation lead to more tolerant people, or smarter people, or healthier people for example?
The political interests that support blobs would like to portray them as a civilizing factor. But the truth is that, despite creating the appearance of 'tranquil diverse melting pots', the tranquility is based on reducing the abilities and senses of their victims. The only real development that occurs within a blob is a development in the ability to forcefully 'assimilate' other cultures by sacrificing them.
It is a useful skill, but at this point it is like an animal that is starving and eats one of its own limbs. It may have been the right decision at some time, but it is neither wise nor sustainable long term.
Melting pot leaders have created an elaborate fictional paradigm in which, for example, this or that 'civilized behavior' is the true test of a human being's development. As each fiction slowly gets washed away by fact it is replaced by new more complex fictions.
A person can justify literally anything. You can go door to door shooting dogs and if somebody complains, as long as you have the best gun you can say "I was just killing fleas."
The best guns are not in the hands of 'government', though, and it would not be wise to encourage people to get on government bandwagons, joining crusades to absorb and assimilate and create ever more elaborate fictions.
The natural truth, which survives all blobs, is that indigenous people and cultures have important things that do not survive the melting pot, and at some point there will be a mad, desperate scramble to save the remaining indigenous societies and revive those that are at extinction. It won't be the polite, tolerant respect for diversity of today, it will be a whole host of emergencies that cannot be solved by melting pot people and paradigms.