This is the worst excuse I've heard to date. Again, the chips work whenever the plot needs them, too. Giving an excuse of "They're wearing off" is a cop-out. Let's pretend for a moment that Palps hasn't executed Order 66. You're telling the LONG NECKS created a product that was so deficient it just randomly stopped working after like 13 years. THE KAMINOANS????!!!
Fine, we'll dance down that road. So, let's say in year 14 Palps decides to execute Order 66. This means that many of the clones would not turn on their Jedi which means Palps, who ORCHESTRATED THIS WHOLE THING, would be up the creek without a paddle. Lost in space. Whatever you want to say. I guess that's REAL convenient Palps ordered this when he did.
I am for the chips not ALWAYS working, but this season they were willy nilly after establishing no one can fight the chip and it's rare that it doesn't trigger. I could believe the BB didn't react to the chip the same. (Although after all Echo had been through Rex was ADAMANT about removing his chip as well) But we receive no reasoning for Cut, there's suddenly Howzer and all those men, there's Gregor (maybe I could buy his chip not working, but see Echo's chip above). They work whenever and wherever the plot needs them to.
Effectively, we've made Fives sacrifice, Tup's death, and Rex's attempt to fight so much less impactful. It also negates pretty much the entire bar scene in episode seven with Rex (and pretty much the plot of the episode). "You're all ticking time bombs". Apparently not. Only when the plot needs you to be. And that means there are no stakes in this show. It's just whatever.
One last thing. Both Jennifer and Filoni are writers (every episode). They are creators. They are effectively the showrunners which means this is on both of them. They decide where they want to go with the show. Which way the horse turns by pulling the bit. They've both done a very poor job of doing that after all this hype and excitement. They need lessons in story telling.