Maybe try reading the other papers. Then get back to me.But that does NOT say that changes in thermohaline properties drive the glacial-interglacial cycle. It says that the salinity difference between the Atlantic and Pacific may be increasing, it says that such a process (with rather ill defined end points) might be taking place at the same time scale as the glacial cycle and suggests that this process might be bringing freshwater from the Pacific to the Atlantic. It says NOTHING about the cycle cause. Nothing.
Look, I can see that you're trying. But you need to give some real consideration as to why you're having such a hard time finding anything to support your ideas.
Deep Atlantic Circulation During the Last Glacial Maximum and Deglaciation
https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/PA005i004p00469
Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes - Nature
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010PA002032