Not to mention the unrelenting psychic toll of working low wage jobs in a country with a weak social safety net.

Which may suggest that the "American way" is to work fewer hours per day, and then try to cram in some fun after work, whereas the Greeks allow themselves to delve into more fun over the span of entire days instead of short spurts. It is possible that more happiness is derived when one is able to enjoy themselves in larger blocks of time, even if the total quantity on a time-unit basis ends up being the same as anyone else. That would support both scenarios in the comments, even if they seem contradictory on the surface.

But, as with earlier comments, this is all based on hypotheticals for the sake of illustration. There is no indication of what the speaker from the greater thread was actually talking about.