Those are full-time employee rates, not freelancer ones.
Please keep in mind a couple of things:
- a freelancer has periods when they don’t work (so-called “between projects”); in this time they may be sick, they might learn a new technology, go to a developer conference, etc, but don’t get paid
- an employee’s skillset might be less diverse than that of a freelancer (they may only do backend and get away with it), while typically freelancers deliver a full product (frontend, backend, devops, maintenance, optimisation, etc)
Actually a lot of people (including @iamntz) wrote extensively about the topic, but the conclusion is that it’s not fair to compare a full time employee’s hourly rates with the freelancer ones.