That expression has been very common in the UK for decades with no dog whistle aspect and, as some one who lives here, there still isn't a dog whistle connotati

That expression has been very common in the UK for decades with no dog whistle aspect and, as some one who lives here, there still isn't a dog whistle connotation ... the expression just means run down, dilapidated and a bit ... well, shit. Remember Trump wasn't world president so not everything exports across the Atlantic.