Wow! You don't hold back on the stereotypes do you? Practically none of the people I know do this. Infact they tend to do better wage/house wise than the general population if you take a look at the data.
By no restriction of spouses on E3, it allows a person to do any job including being a Walmart cashier, hairdresser anything like that - which generally tend to be lower paying jobs - even less than 60k. There are people on h4 ead making more than 120k+. So it's not even about low wages as well. If you take a look at all the decisions taken on immigration over the past year (Muslim country ban, GC lottery and chain migration policy potential changes, extensive rfe on applications)it looks like an attempt to make immigration from non-"Western" countries tougher - which is perfectly fine. It just shouldn't be packaged as something else.