That could be explained simply by insufficient knowledge of the game. Charging takes quite long in DFK too if you just hang back and use the shot, but with proper techniques you can use the aura and have your hypers charged instantly even with the bomb ships.
True, but that was only really an issue for Bomb and Strong type throughout the game, and for Power type at the beginning of the game. Power had an increased hyper generation rate in unhypered Normal Mode, and you could use hyper Boost Mode to generate more energy. And once you had one hyper, proper play would see you generating them near constantly.
EDIT: Hang on! I think I've sussed it. If you look at the clips, there's a little light above the chaining gauge that lights up when it hits max. When it lights up, any kills after that keep it over max will add to your hyper gauge instead. Hyper generation seems to slow considerably in hyper mode, though. I wonder if the chaining gauge has an effect on bees as well, as I noticed a percentage multiplier on them when collected.
EDIT 2: Interesting. In normal mode, star items are +pts, in hyper mode, they're +hit.