I honestly don't think that this is a flaw.
All it's saying is that at a certain point, the "limitation" of having only X charges isn't really limiting the character enough to be worth any points.
For Charges, that cutoff lies at 33. Frankly, I agree with that. I've played characters with charges fairly often in the past, and when they have more than 12 I rarely have an issue running out. It's rare that a character is in combat more than once a day, and given that most combats are fairly short-lived, it's rare that you get a chance to fire off that many rounds.
Now, with the new MPA rules and such, it helps make Charges more limiting, but I still feel that 33 is a good cutoff for it not being limiting enough to warrant any points.