The AMOC collapsing (I have no idea why the title says 'Gulf Stream' as that is different and not mentioned in the post), has far more disastrous implications than destroying the climate of Europe.
It's the beginning of the process of ocean de-oxygenation, ultimately creating a lifeless ocean that emits hydrogen sulfide instead of oxygen. It would completely disrupt the planetary food change, make the ocean poisonous, and fundamentally alter life on this planet in unimaginable ways.
For a more detailed look at the issue I highly recommend Peter Ward's "Under a Green Sky".
Ok, but this happens pretty regularly on a planetary scale (at least every 110,000 years or so) - why hasn´t it been so disastrous before - say at the end of the last interglacial?
There were fewer humans around last time. Also there were no 'journalists' around to proclaim it so. If a tree falls in the forest and there is nobody around to hear it, does it make a sound?
It's the beginning of the process of ocean de-oxygenation, ultimately creating a lifeless ocean that emits hydrogen sulfide instead of oxygen. It would completely disrupt the planetary food change, make the ocean poisonous, and fundamentally alter life on this planet in unimaginable ways.
For a more detailed look at the issue I highly recommend Peter Ward's "Under a Green Sky".