Again, please show me the observational studies or data which suggest that El Niños are strongly correlated to low Arctic sea ice. I am not aware of such a linkage. Warmer global temperatures during El Niño are mostly associated with elevated SSTs in the tropics and midlatitudes (especially the tropics). As far as I am aware, there is not a strong correlation between ENSO and overall Arctic sea ice.
Indeed, a cursory glance shows that some of the strongest El Niño events in recent record (1982-1983 and 1997-1998) were not followed by particularly anomalous Arctic sea ice minima (1983 was near or even slightly above the average of the time, and 1998 was below the average of the time, but not remarkably so). Other moderate El Niño events such as 1986-1987, 1987-1988, and 1991-1992, were followed by anomalously high Arctic sea ice minima for their time. Furthermore, the extremely anomalous 2012 sea ice minimum record was preceded not by an El Niño, but by a La Niña.