This reads like DARVO - Corporate Edition with a derogatory jab towards free time and unions both.
I work 30h now too and thus I suppose this is aimed at people like me, but tell you what: the job I applied to was actually only approved by HR/payroll for 30h max, the company doesn‘t WANT to pay more than this and they knew they wouldn‘t find anyone experienced to sell 40h of their life for such a measly salary.
So we managed to find a mutually beneficial agreement, I get to live and exist like a frugal monk, perpetually renting and never owning anything (the European dream!), and they filled a position at 70%, pocketing 30% of the salary they would have had to pay to attract a full time worker.
Now, how is it my fault I can’t spend like an American and the economy stagnates then? It‘s maybe a shared responsibility, but truly, the company is the one in charge here and if they told me I have to work full time and get that 30% more pay too, I probably would (since I kinda like my current job oddly enough and don‘t want to switch again yet).