The "th" of "thin" is a different sound than the "th" of "the."
I don't think English-speakers in the US, Canada, Australia, and New Zealand are going to change the way they speak because of immigrants in SE England having a hard time with pronouncing English properly.
Although after Soros & Co. buy this election and send us all off marching into the New World Order, we’ll shortly all be speaking Esperanto. Rendering this moot.
<< Dr Dominic Watt, Senior Lecturer at the University of York, said: Given the status of London as the linguistically most influential city in the English-speaking world, we can expect to see significant changes between now and the middle of the century. >>
Prof Watt doesn’t seem to get out of York much. *London* is the most influential city in the English speaking world? ROFLMAO Maybe a few hundred years ago, but I think he may need to get the news about that little colony across the pond that told George to FU a while ago.