I can see why they’re unconcerned this will slow the rate.
I converted and rounded up to the nearest dollar, exchange rates will vary slightly.
"The fee will be increased from the current $19 to $93 for a single-entry visa and from $38 to $186 for a multiple-entry visa. The new fees will apply to applications submitted on or after July 1."
But yes, this is a trivial amount when compared to the overall cost of a trip to Japan.