I changed the batteries in my Sony WF-1000XM3 earbuds without too much trouble. Unfortunately I don't think you can easily replace the battery in the case, so I still had to charge the case pretty often.
Do you feel like you shouldn't use it because of the author's politics? It's not like he gains anything from you using it. Even if he gained money from it I don't think there's any reason to believe he'd use that money to further those political opinions.
Funnily enough I've always heard that referred to as a "coin pocket", but since I live in a country that has barely used cash for the last 10+ years I thought this was very anachronistic and started putting my keys in there.
> you’re somehow entitled to more of his lifetime dedicated to the features important to you personally.
They never said this, only that developing a product to be used by a lot of people and completely disregarding a (arguably very common) use case is arrogant.
Remembering the Kanji is for learning how to write kanji, which does help with reading as well, but that's not its primary purpose. If you actually do want to be able to write by hand (which I think most people (understandably) don't want to invest the time for), it's well worth the time investment.
> it's not something you should spend your entire focus on before you start learning the actual language of Japanese
This is also true. You can do both. In fact I think you /should/ do both, learning new vocabulary using the kanji you've learned so far to help motivate you to learn more. It's quite addicting when you can see your progress day-to-day.
