Automated translation (to English):
I've been using Mac professionally for over 20 years.
Today, with a Mac i9, 128 GB of RAM and Radeon Pro, they tell me that I can't install ChatGPT "because I don't have Apple Silicon".
This exclusion is not technical, it is purely commercial. A betrayal of those of us who trust the brand for decades.
I see my future more and more clearly: Linux.
I don't want to be hostage to absurd strategies.
I want to keep creating, without chains.
Apple Intelligence is only available for Macs that have Apple Silicon processors. Those processors all have Neural Engine co-processors to accelerate certain types of machine learning computations.
A lot of Apple Intelligence processing is done on-device for privacy and security reasons, and while ChatGPT does processing remotely, on someone else's servers, potentially exposing your data, I believe the ChatGPT integration works as something that you can optionally use with Apple Intelligence. It thus requires a Mac which is compatible with Apple Intelligence – which your Intel-based iMac isn't.
Nothing is preventing you from using ChatGPT in other ways, i.e., through a Web browser.
And you can certainly switch to Linux if you want – but good luck with finding a lLinux implementation of something like Apple Intelligence that goes to as much trouble to protect the privacy of your data.
Apple Intelligence and privacy on Mac - Apple Support
Apple Intelligence - Apple