It is true, and it is much worse than what mainstream lets on or the average psyche understands.
The IPCC is heavily incentivized (coerced) to let out conservative/watered-down data because of the capitalist funding and the panic/heavy depression that would result as a release of the information we actually know.
Unfortunately, it is already too late to save a large chunk of humanity and life in general on this planet. Unfortunately, there will be horrible things happening (already are) at a large scale that will probably not be solved by smart people somewhere.
This shouldn't paralyze you, like we can't give up. It's not like an "over, or not over" thing, it's still a spectrum and 4 degrees of warming is exponentially worse than 2.7 or whatever. But we need to be realistic and start developing harm reduction and not pretend we can stay below 1.5 or whatever garbage the MSM is still spewing.