The Guardian: Earth may have breached seven of nine planetary boundaries, health check shows

[OKIsItJustMe]

16. I'm not as optimistic at this point

I was (guardedly) optimistic in 2008, when Hansen et al summarized things like this:
https://pubs.giss.nasa.gov/docs/2008/2008_Hansen_ha00410c.pdf

Present policies, with continued construction of coalfired power plants without CO₂ capture, suggest that decision-makers do not appreciate the gravity of the situation. We must begin to move now toward the era beyond fossil fuels. Continued growth of greenhouse gas emissions, for just another decade, practically eliminates the possibility of near-term return of atmospheric composition beneath the tipping level for catastrophic effects.

The most difficult task, phase-out over the next 20-25 years of coal use that does not capture CO₂, is Herculean, yet feasible when compared with the efforts that went into World War II. The stakes, for all life on the planet, surpass those of any previous crisis. The greatest danger is continued ignorance and denial, which could make tragic consequences unavoidable.

Sadly, since then, carbon dioxide levels have increased relentlessly.