Migration nonlinearities
Warning: rant by ignorant non-immigrant Observation 1: migration of people in small numbers in a short period of time improves diversity of outlook and idea generation Observation 2: migration is large numbers of people over a long period of time is good for he same reason Observation 3: migration of large numbers of people in a short period of time is a catastrophe for the locals. Example 1: Europeans migrating to America and literally exterminating the locals Observation 4: 1,000,000 upper class males from south east Asia with a good education evenly spread across the square mileage of the US does not cause homelessness. Observation 5: 10,000 upper class males from south east Asia with a good education dumped into a single city causes homelessness There seems to be both time and space nonlinearities when discussing the topic of migrating populations. But these things are rarely discussed very deeply or even acknowledged. People take hard line stances, such as “immigration limits are racism” or “god hates immigrants” etc.
Where are you seeing observation 5?
5 is not just limited to immigration from other countries. It is more likely exponential growth in one sector causing imbalances. Seattle is a prime example. Most migrants are actually from California. Even in sf bay area, which I think OP implies, the largest migration is from within us, simply because of growth. It's still super hard to get thru the h1b quotas for migrants from south east Asia and east Asia to make the kind of impact OP is stating.
“same foreign-born population percentage” ... another assumption of linearity. “unfamiliar pathogens and technological differences” ... a fallacy that says “as long as we don’t do these specific things, history will not repeat.” The future is completely opaque though. The fact of the matter is that people are born xenophobic. Its not a mental heath issue. It’s a heuristic that has withstood the ages and protects from more than just pathogens and technological differences. It also protects from differences in reproductive rates. You see signs or policies sometimes warning against invasive species of plants or microscopic organisms. It’s such a common thing for the government to regulate migration of invasive organisms, but when those organisms are people migrating en masse from the most overpopulated regions in the world, suddenly it becomes “hate.”
A mess of straw man, ad hominem, and fizz buzz. If you were to dump 10,000 people from <insert your favorite nation here according to your fetishistic racial preferences> into a city all at once, you would create homelessness. This nation was built by immigrants and it didn’t end well for the natives. The people, of any race, currently residing in America, have power. They have votes. They can let people in, from any nation, at whatever rate they choose. There is a difference that is critical: a workout causes a little damage but builds muscle, while chopping off an arm is not comparable. They are two different levels of force, sure, but the damage is not linear.
Agree with you observation but it is what you sow is what you reap... colonization made that south east Asia poor and western world as some kind of heaven so now everyone wants to be here..