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Hi, just an inter-generational message:

25 years ago, I used to be a colleague of a lead author of that report. Like the others, he flew to global conferences, gradually built up a portfolio of papers, and so became a a famous professor with an interesting life, and can now release such reports with obvious timing to influence COP28 (and thereby get government support for the team to continue such research projects...).
But the contents are not really "news", most of this was predictable by those of us who knew the science back then 25 years ago, which was also reported the hottest year for a millenium. My thoughts then were similar to some of those some you write below (->above?). So I went to protests, and (by train, bicycle) to COPs to try to bridge the gap between science and policy, and instead of papers tried to spread knowledge via interactive web tools (really new tech then). I didn't nurture a career, because I didn't expect society to survive for so long. I assisted for a while near the core of IPCC and EU policy, but without papers and flights for networking, was easily disposable. Now 25 years later I sit shivering, in relative poverty, with little influence. To keep trying, I revive my interactive climate model (admittedly needs much more at the impacts end - no such big team), still hoping such tools could communicate something papers don't. I'm not judging who was right, just telling younger people - be aware this is a long-term game.

As I wrote in another post recently, tipping points are real, but thresholds vary by region and sector, and we don't know them accurately. So if you integrate over risk you get a curve - non-linear of course, but not showing that any year is particularly special - unless we make it so, socially.