Are they? I don't know any factory workers but I have friends outside of tech and they can all relate to "arbitrary rules from management that make my job harder are frustrating".
The people who spend the most time sneering at 'the laptop class' that I'm aware of are independent, ie, non-unionized, tradespeople who operate as sole proprietorships - emphatically not factory workers. The arbitrary, unproductive distinction between 'real' physical labour of the kind carpenters, roofers, drywall technicians, etc, do and 'laptop labour' is increasingly being seen as exactly that.
