At least in stats, the use of greek letters is helpful. Usually, the upper cases are kept for function like T(x) or to denote random variables. The lower cases for observed values. So when we see a greek letter, we know right away it's constant or a parameter.
I agree completely, and would emphasise 'at least', or change it to 'for example' even.
I only meant that criticising anyone for using them in the first place is unfair/hypocritical, because we'd quite readily do the same with the Latin alphabet.
