The reason why folks working in social services might have a different impression is that they’re primarily coming into contact with people who are in failure mode for a variety of reasons: addiction, health-issues, mental illness, etc. They are not representative of the poor and working classes in general, and their failure to maintain a strong work ethic is often impeded by their life challenges.
Also, the small percentage of freeloaders out there are very good at sniffing out opportunities for taking advantage of the system. That may make them seem more common than they actually are.
> but the reality is that social mobility (particularly in the West) is at a historic all time high
No idea about global social mobility, it’s entirely possible it’s at an all-time high. But you’re definitely wrong about social mobility in the USA. It’s been declining for many, many decades:
https://www.pnas.org/content/117/1/251
https://en.m.wikipedia.org/wiki/Socioeconomic_mobility_in_th...
A few studies show that the decline in social mobility may be leveling off, but if that’s the case (and even that isn’t clear-many studies show the opposite), then almost certainly the financial crisis and COVID will reverse that trend.