The chevra who wants to chase after their taavos in a kosher way never ceases to amaze me.
The simple difference between refusing a hashgocha due to environment, culture, “hang out” status, a bar with TV, etc…and issues regarding paying workers, taxes, etc…is very simple to understand to the unbiased mind.
What someone does in their personal life is not the business of the mashgiach. The same way we don’t check in on him in his house to see if he keeps shabbos and taharas mishpacha – now if information of those things came to light, we wouldn’t be able to rely on the owner as a shomer shabbos person, but that’s a different story.
What the hashgochos are concerned with is…what are we making available to the tzibur? Are we opening the gates of immoral behavior and outside influence to people for whom Kashrus is the sole bulwark preventing them from going to sports bars, etc…?
That has zero to do with the ethics of the owner or how he runs his business.