People do it anyway, but you can't practically make those kinds of comparisons and unearth much of value.
The characterization of mental wellbeing is cultural, not universal, and the methodology of collecting assessments is also sensitive to culture.
But it doesn't really matter because it wouldn't tell you much besides "ah, only Ireland has this problem I guess" or "whelp, this has been rising eveywhere" -- neither of which are especially practical conclusions when it comes to actually doing something about it.
The characterization of mental wellbeing is cultural, not universal, and the methodology of collecting assessments is also sensitive to culture.
But it doesn't really matter because it wouldn't tell you much besides "ah, only Ireland has this problem I guess" or "whelp, this has been rising eveywhere" -- neither of which are especially practical conclusions when it comes to actually doing something about it.