I agree on a school being more selective (if they can) , the better should be it on the future ranking table. Intake selection competitiveness is the main explanation factor for league table ranking but not the input from the school itself.
My point is the increased number of applicants not necessarily translate to an increased level of school selection. The intake selection competitiveness need to look at multiple factors together.
There are many reason for more people applying, for example baby boom at 2010-2012, or kids apply for more and more schools compared to before. This is not specific to any specific schools.