It can get worse. "Woman was told she’d be fired if she didn’t marry boss’s Indian relative so he could immigrate here" - [0]
0 - https://www.surreynowleader.com/news/judge-annuls-hairdresse...
Secondly, this happened in Canada where Sikh/Punjabi immigration was not skill based, but rather fueled by mostly uneducated people looking for a better life. This is completely in contrast to the H1B which is a skill based employment visa.
Here are some educated managers in US tech companies - [0]
0 - https://www.teamblind.com/article/Do-all-Indian-managers-suc...
Being a manager usually takes English proficiency, so Chinese managers in western companies are not as common. Given the racial breakdown of people in software, that leaves most people with either an Indian or white manager.
However, people never generalize white people culturally, because it is well understood that their color doesn't say much about how they are culturally or ideologically wired.
Similarly 'south asians' as a racial group are pretty culturally and socio-economically diverse. So generalizing such a huge subgroup is not very helpful. People differ in key ideologies of how to go about things as you cross state, religious, developmental lines in south Asia.
That being said, I can hypothesize why certain Indians may display traits that are considered undesirable among managers. But that write up must wait for another day.