He states that the peoples of Europe should interbreed with Asians and other non-White races, to create a multiracial population, with no clear sense of tradition or identity and therefore easily controlled by the ruling elite.

I feel the main reason up until the point of "easily controlled by the ruling elite" is what would be required to have people be unified, however, you will always have localized tradition or cultural values this is very apparent in the difference between South African Indian and India Natives or Boere and English South Africans, although they are not far removed from in religious views, they can be worlds apart in cultural and traditional values (better word?).

For his idea to actually work you would have to completely remove the taught to believe nonsense people are brought up with this includes religion, tradition and promotion of racial differences / or punishment

_{Really hope I am using these terms correctly , but I am answering in my opinion so as always completely open to discussion and or corrections}

You will fail, but mindset is easier to change than all of the above, so you may have multi cultural, religious, tradition and races (this has it's own characterization depending only on the preceding values mentioned - so a black, indian or white french from a family not beholding to the above values will have no significant difference in characterization other than personality)

Is this personality more subseptible to being ruled? I do not know, but I would wager that it will not be since breaking from tradition and religion in itself is a matter of freewill and questioning, fact of the matter though is that if something works we ignore it , so if the government and masons and everyone just ploughs along their merry way , well out of sight out of mind.

As you mentioned in your first post

“The first step is to create a problem, The second step is to generate opposition to the problem, fear, panic and hysteria, The third step is to offer the solution to the problem created by step one = A change which would have been impossible to impose upon the people without the proper psychological conditioning achieved in stages one and two."

You need to do this to be able to create the required mindset across all types of people then follow through on the last part "being able to control by the elite"
Because they have the resources, and will get more from the fallout in some fancy , stock exachange makes no fucking sense way.
_{Sounds a bit like steem}

...you do not have to use the age old practice of divide and conquer, if the new influx have no interest in being part of the community anyway, and prefer to hang "with their own kind"

As the majority just keep on living, and making more people to suffer under new people , teaching them the same shit, and making them feel special. As much as a person would think there are those with so much global power, it all starts at the root of a society and the most evil most backwards are those who cling too much to culture etc.
_{This is my main issue with the entirety of humanity.}

Looking forward to part 3 and will be re-reading this and viewing sources , as I gain a better understanding of the topic.