Exactly. I'd always considered a battery replacement a waste of money up til that point. Now I replace batteries in everything! Good lesson to learn. My 6S has had 2 replacements so far and is still powering on!
It isn't intuitive to anyone, given that it's not the battery at all. It's a software update slowing down the phones. People replace a battery when the battery doesn't last. But Apple realizes if people replaced their battery then they would likely wait another iteration to replace their phones because they've sunk more cost into their existing phone, so they've extended the life of the battery by sacrificing performance. This way, people don't replace their batteries, and their phone is so much slower than the new phone that they're even more likely to buy a new one.
Not only that but this is the second time Apple's being sued since they did the same thing to the 4 and 5. And the thing is, they pushed the update when they released the 6. I'm surprised (but not really) that they're still pulling this crap.
