On the other hand, the actual conversations I hear my friends having about business-trips to US are more stressed than conversation my dad used to have with my mom when he was traveling to do business for banks in India, Pakistan or Russia decade or two ago.
My friends travelled to India two decades ago as tourists, it was fairly normal thing to do.
A >0.01% chance of being indefinitely detained and eventually deported/expelled is actually a risk that people are rational to consider when traveling to the US. Low probability * extremely high penalty = medium risk.
The fact that <99.99% of travel is routine does not change that calculation.