Earlier quoted context omitted.
So many H1bs don't even think about buying a lot of furniture, a car or a house for this reason.
So many? As someone who went through the H1-B process and had my status threaten a number of times (downsizing), it was just a reality - if I lose my visa I go back home and maybe try again. It never stopped me from major live decisions like buying a house. Immigrating to a new country is taking the risk that you can’t stay. I accepted that when I immigrated.
It's idiotic to make it hard for immigrants to get back on their feet, it's not like working immigrants cost money..., what cost money is to lose them to a competing country...
But in essence you're right anyway: immigration is a privilege, complaining about it is really unfair to a country that was never forced to take you in in the first place. The only thing we the immigrants and the host countries can do, is compete on entry condition, to bring the most high skilled, high asset immigrants.