High trust is a byproduct of an ethnically homogenous society.

I prefer not having good public bathrooms and instead prefer more personal freedoms, economic growth/dynamism, and immigration. But it sounds like you would prefer different trade offs.

I just think its funny that internet populists believe you can have everything. You can't.

Not that I would particularly like to live there but Singapore has fairly clean public restrooms. I suspect there is more to this than the ethnic makeup of the country.

In the West, I’d argue (from personal experience) that a high trust society probably correlates more with high level of employment and (maybe as a second order effect) reasonably high income.

Taking Switzerland as an example, it’s possible to have a managed/positive approach to immigration and maintain very high societal standards.

Your bewildering obsession with "populism" sure does define your entire worldview