every tipping point is just an arbitrary line that climate scientists draw to try to draw people’s attention to the problem
The +1.5C threshold is a somewhat arbitrary line designed around tipping points. The tipping points themselves are not imaginary/arbitrary. Forest fire spread increase. Methane defrosting. Polar melting path certainty. All of these increase GHGs and warming. Hurricane intensity+drought+intense rainfall events destroying property values is somewhat of an economic tipping point starting to affect some right now.
I think we're past the point of the car hitting the wall even if we brake, and the damage ruining your day. We're not past the point that braking will save lives or even make the car unrepairable.