It's not an argument of "this is the absolute best possible choice".
It's an argument that raw language performance in this sort of context isn't going to be the problem for 99.9% of people developing code. If you have 500k orders a month, you can afford more than $6/month in hosting.
I sometimes see folks post on StackOverflow trying to micro-optimize things like string concatenation or single versus double quotes that make perhaps a second of CPU difference in a million executions. The point is directed at those folks; the ones who are thinking "language X is faster, and for that reason alone I should use that instead".
It's an argument that raw language performance in this sort of context isn't going to be the problem for 99.9% of people developing code. If you have 500k orders a month, you can afford more than $6/month in hosting.
I sometimes see folks post on StackOverflow trying to micro-optimize things like string concatenation or single versus double quotes that make perhaps a second of CPU difference in a million executions. The point is directed at those folks; the ones who are thinking "language X is faster, and for that reason alone I should use that instead".