The US is still the most prefered destination country: https://www.weforum.org/agenda/2017/11/these-are-the-countri.... It overshadows the next four popular destinations combined.
Also, the gains have literally come because of the investment in smart immigrants in the 00s. That gave fluidity in the hiring market, allowing megacorps to expand rapidly while other countries couldn't. They just didnt have so many smart employees.
The impact of today's immigration policies will be felt 5 years from now
Because as a software engineer with a lot of software engineer friends, none of us have seen that.
If you are not seeing growth you may need to gain more marketable skills. Whenever hiring people, more in demand skill sets definitely command a higher salary
But what you linked does not clearly indicate that at all considering growth has been consistent over the past 8 years. In fact it seems that salary outlook has even slowed slightly over the past four years.
This does not match your claim at all.