@arnan Good question, why indeed?
I've had this MacBook for around two years now, and it's always been fine. I've held it on Sonoma for the reasons I mentioned, and since the last Sonoma update, the TouchID (or unlock using Apple Watch connection) is extremely unreliable.
Could be coincidence... could be something else. I guarantee though that if I raised a ticket with Apple, I'd be told that I'd "have a better experience on the latest version of the OS" ... they have form for this.
In my experience, both the software quality and business practices of the company have deteriorated over the past few years. There have been some great features introduced, but also some whopping bugs and dubious practices.
To qualify my experience, I've been an Apple user for over 20 years now, and I've worked with them in a professional enterprise capacity since 2016 (as in, I was responsible for the enrolment, configuration and management of up to 3,000 macOS devices, including creating the environments to achieve this, at several global organisations).