At one end of the scale is very little data that gives an unreliable picture with a high degree of variability, at the other end of the not very long in time scale is somewhat more data that provides a better picture.
To make such a fuss about " this demographic change " indicates a lack of exposure to such statistics.
Why are you attempting to make such a big deal of bad data here?
I think some people have backed themselves into an ideological corner on this one.
I'm indifferent to the social issues here, I care about the <gasp> statistics presented.
With the linked and peer reports there's a short time span, limited populations, and a run of yearly statistics that start with very few numbers and end up with less than 2,000.
The initial numbers make the guesstimation of an inital demographic ratio extremely dodgy - it's not sound.
Despite this there's been someone with .. an idealogy(?) .. making numerous comments about "Look at the demographic shift, eh", "What's that all about", "nudge nudge".
The dull numerial reality is there's no strong evidence for a shift .. if anything it's more a "time and increasing sample sizes make for a clearer picture".