However, it is interesting that now I am not the only one that speaks like this. More and more of my friends speak the same way that I do. Every now and again, I miss out letters and also slur words. However, if need be I can speak very pronounced. Whereas in the 1950s people were obsessed with having a full vocabulary, Estuary English is actually decreasing the number of words that people use.
People are less concerned about what they sound like.
This is mainly to do with the more emphasized equality of today's society where people are more satisfied with their position in the social circle. People are less worried about how they sound, just more worried about how to get on and adapt to the world around them. To do this they need to be able to converse freely in a language that they are happy with - Estuary English. While attacking people on ground of race, sex or age is considered politically incorrect, it is till surprisingly common to encounter attacks based on accent, especially if those accents originate in the lower classes. In theory, it ought to be possible to convince fair-minded people that all accents are equally valid, as long as they are mutually intelligible.