This might not be true, many of PIC user's manual recommend a 0.1uf cap on the Vpp pin, this will make a large Vpp initial current and slow the Vpp rise rate. (I personally think this is a users' manual mistake and never implement it on my application circuit designs. ) On this case, it requires the Vpp supply a large transient current.Exactly. The "needed" hardware modifications are to make the old black button model work with the new PIC's.
This is one of the reason, the new official modification can provide up to 10~13 mA current.
As it is said, if everything works fine, then no bother. If you encounter some issue related to a Microchip designed limit, then modify your Microchip version of PICkit 2 as recommended.