How ignorant. If Bleach was replaced as you put it, it would still be making episodes and would have tried to shift network's (channels) in order to get a time slot. It just so happened that Bleach wanted to end and ended. The network had to put on another show and it happened to be Naruto spin-off because they consider the fan-base to be the same. Which means that the network woulnd't lose ratings and still make money because people are going to watch.
If they replaced it with say, a baking or cooking show, do you think they'd make money out of it?
It's not like the TV network said,
"oh we don't like Bleach because of random power-ups, lets replace it with a gag spin-off show."
Here's what happened:
The production house making Bleach decided to withdraw from it for now for reasons unknown. Maybe they want to animate it fully at length once the arc is over because production values for Bleach are very high.
Get some info before you start blathering nonsense and spreading it around the net.
Seriously how old are some of you? 16? 17? Yeesh.