Is that what research says? Winters in Poland have been getting warmer not colder.
When I was a kid every winter snow started falling in december and started letting up late february or in march. For the past few years there was almost no snow in the winter. Temperatures are higher too. I barely needed my winter coat past few years.
The research is about warning signs[0] of a collapse of the current that keeps European winters warmer than Canadian ones, it’s not saying “it has already collapsed”.
[0] and the warnings are without a specific timeline: "Observations and recently suggested fingerprints of AMOC variability indicate a gradual weakening during the last decades, but estimates of the critical transition point remain uncertain."
The gulf stream does a huge amount to warm Europe relative to those latitudes in north America or Asia. If those currents shift or weaken it will result in much colder climate in Europe, though the rest of the globe will continue warming and is warming now (what you're observing).
When I was a kid every winter snow started falling in december and started letting up late february or in march. For the past few years there was almost no snow in the winter. Temperatures are higher too. I barely needed my winter coat past few years.