Yes, I also have heard that story. No idea whether or not it be the case.
My besi friend for some years (See him not a lot since he got wed and moved away) was a Geordie, and yes, he whur a heavy drinker. Used te keep us all awake with endless rounds of 'Blaydon Races, Cushie Butterfield, Geordie Hinney, Lampton Worm, etc etc.............) And then by loud snoring, and could never wake him the following morning!
Next door neighbour is a Geordie. You would not know bowt him telling: speaks perfect RP,
Across the way neighbour also a Geordie. Only when Newcastle lose does he revert to Geordie speak.
Don't know if I will encounter much, as location to which I am going, there is no one there. That is why I am going: dark skies.