The number of Russians who say their salary does not cover basic spending has jumped by 20 percentage points in two years to almost half, a survey by recruiter Headhunter showed, as Moscow diverts record fiscal resources to funding its war in Ukraine.
I have a hard time squaring that sentiment with information like this:
https://www.statista.com/chart/28436/support-for-war-in-ukraine-russians/
The link you attached already mentions that isnt accurate. Not everyone living in Russia will publicly annouce they are against their government even if they are.