Sounds to me like he is commenting on two things: many developers only see only type of problem; and many developers have a hard time picking the most appropria

Sounds to me like he is commenting on two things: many developers only see only type of problem; and many developers have a hard time picking the most appropriate tool any given problem. He's paraphrasing and expanding on the original metaphor by acknowledging our field's desire for standardization as an optimization strategy while introducing irony in the misuse/non-standard use of tools to complete the same function.