I see most of the posts concentrate on the negative aspects of city growth, or use the headline as a way to shoehorn their prudjudices into the 'debate'. It's not necessarily the case that it is a negative thing.
'The Fast Growth Cites are among the UK cities with the highest GVA per worker,
with three featuring among the top 10 cities in the UK – Milton Keynes, Oxford and
Swindon (Table 1). Combined, the Fast Growth Cities generate £57,000 per worker;
over £3,000 more than the British average of £53,700.'
http://www.centreforcities.org/wp-content/uploads/2016/03/Fast-Growth-Cities.pdf