These brag posts could be about the cost of living now kicking in for the higher earners, so that they are complaining that because they have a bigger house, mortgage, newer bigger cars, and everything is going up and up and up in cost they are in a more similar position that the vast majority are always in.
Their disposal income has been reduced so whilst paying for the house, childcare and car, there is much less left over for all the other high end holidays, activities and such like.
If you earn £100K you will be fine, you won't be homeless and you will be able to eat healthily so really you will be fine.
It's a question to ask ourselves as a society, do the wealthier want to keep keeping more and more and more of a percentage of the cash and let more and more, decent just as hard working, lower paid workers struggling?
Or do we want a society where nurses and police can afford a decent home after a hard shift and a holiday once or twice a year?
Personally I am hoping that the increase in NMW and shift in tax brackets do create a society where lower paid workers have a better standard of living.