While I get your opinion, these things have definitions. Here’s a super simple version:
A dumb phone does not connect to the internet. Its a phone. Just a dumb device.
A feature phone is what you’re referring to here, where it may connect to the internet, but isn’t part of some larger ecosystem and is certainly not an app-first approach. Its a phone first, ancillary features are a bonus.
Smartphones are your android and iOS devices, which connect to the internet, is part of a large ecosystem of applications, is an internet first oriented device, etc.
So yes, this is a feature phone from what I’ve read of the translation.