I think this is a legitimate issue, though I'm not sure I really agree...there just seem to be too many places where it provides too much utility. That said, I

I think this is a legitimate issue, though I'm not sure I really agree...there just seem to be too many places where it provides too much utility. That said, I tend to change my opinion on the topic fairly frequently, based upon whether I was last writing something where dynamic function declaration was convenient or last looking for where a function was declared. One thing I think the post might emphasize more thoroughly is that dynamic function invocation (at least when the function is defined in the project scope), is probably far more problematic than dynamic function declaration, particularly if sometimes the function is explicitly invoked, and sometimes dynamically. In this situation, I'll generally try to document that the function is dynamically invoked with the function declaration, but I'm always unsure what exact information I should put there. Simply saying something like "Dynamically invoked -- grep will not find all usages" is a minimum, but I often want to add more than just that.