That is your interpretation of my words. I said the battery is not large enough to sustain such a powerful CPU after several years of use. Whether you consider that inadequate or not is up to you, but this is the standard for premium phones and current battery technology. Some people prefer thin & light, others bulky and with big batteries.
The battery is good for 2 years of normal use, maybe more, then it needs to be replaced. After that, it will last you another 2 years. In return, you get a slim, light phone. Nothing inadequate here in my eyes.
This "form over function" discussion is nothing new to this forum. Again, some people would like to have enormous or user-replaceable batteries, just like some people like laptops with user-replaceable drives and RAM, some people like modular desktops, etc. Others like Apple devices. You don't seem like the latter, so enjoy the numerous competing products. Still doesn't make the iPhone battery inadequate or forced obsolescence or whatever you guys keep repeating here.