If anything, in Diptera, I see it as the other way around.
We don´t have enough specialists.
We have enough generalists capable of pushing from class to order
We have less people capable of going from order to family.
And less people capable of going from family to species ( other than Syrphidae)
As my knowledge and interest is more order to family/genus, I feel I´m wasting my knowledge base and energy more if I´m active at higher levels. There are always plenty to ID at the level I work at.