Well. I mean that's like THE most important thing. Charging at a higher C rate is going to cause increased wear on the battery and less life. That's why most phones are limited in that way.

It makes sense to me IF it actually works.

Having extra capacity when a device is brand-new isn't a huge boon, but having stable capacity over the long term would be. At least for me.

Of course this will depend on your habits. If you replace your phone every year, then it doesn't matter. If you're a light user and only go through a couple charge cycles per week, it'll matter less than if you go through 1-2 cycles per day.

Personally I'm at around 1 cycle per day on my current phone, and after nearly 3 years (over 1000 charge cycles now) the battery life is shit — much worse than just 80% of its original battery life. Performance also suffers. With my last phone, I replaced the battery after 3 years and I was amazed at how much faster it was. I didn't realize throttling was such a big problem.

I might replace my current battery, but it's such a pain, and it costs more than my phone is realistically worth.