> the number of taxonomists, people who could accurately identify species (many of which require internal dissection, or molecular methods), [...] has most certainly declined.

That sentence is close to falsifying itself. If species can be identified by molecular methods, then anyone trained in basic molecular bio techniques can do it.

Now, I don't know how many insect sequences that would enable identification are actually available in databases (might be a few, might be a lot...), but "molecular methods" make this easier, not harder.