Disclaimer: I was working as a freelancer/subcontractor for most of my career, am now a CTO with all sorts of employees & (a few) freelancers in my team.
The biggest difference between a freelancer and an employee is one of expectations on both sides. The freelancer doesn't/shouldn't expect the company to provide him with a career path, personal growth opportunities and job security.
He expects to be paid for services rendered, a service he in many cases only can provide because of the specific freedoms he enjoys that allowed him to develop himself into a position that is particular valuable and not present at the contracting company.
An employee on the other hand is a completely different beast and can and should expect the aforementioned things and more of the company, at least in Germany where our company is based and which labor laws & and history influences our/my attitude towards these things.
To your question: An employee planning the company picnic is actually doing his job, discussing their spot in the company fantasy football league could be seen as "enjoying, participating and nourishing workplace culture".
A freelancer doing the same would be out of place, simply because he isn't awarded those privileges one gains with employment.
It's not part of the contract, neither the physical one, nor the social one. Some companies blur the lines between freelancers & employees to foster more cooperation and give their employees access to more outside viewpoints, but this is largely a factor of company style.
Netflix for instance in their famous Company Culture Deck [1] even mentioned in the very beginning that "Our hourly salaried employees are important, but have more structure job roles".
From this point of view, "to micromanage the keystrokes" is basically just an extension of that, more structure, less freedom in the way the service is rendered and more transparency for all involved.
As a former freelancer it bothered the heck out of me seeing freelancers that I knew negotiated higher rates just slacking of and parading my work around. The only recourse was talking to managers of the customer and working on being viewed as a better "friendly problem solver" then the other freelancer.
Any structured way to ensure there was some kind of fair measurement of productivity would have been a giant boon back then.
[1] https://de.slideshare.net/BarbaraGill3/netflix-culture-deck