I hear this all the time from those new to remote work.
So here is how it works:
In a well DESIGNED work-from-anywhere workplace onboarding of new people is given meticulous attention.
Junior staff are trained into the company. This includes how the company runs to the technology used to get work done and how teams communicate & collaborate.
They are, in this process, also schooled in what it means to work asynchronously.
In a mature work-from-anywhere company all of the above is documented and easily discoverable. In fact, in these environments it’s easier to search for an answer than it is to ask someone in-person.
Institutional knowledge is documented. It is not relayed by word-of-mouth.
New people are also helped to integrate socially, assisted by an assigned person to show them way.
Most importantly, work-from-anywhere best practices and the company culture is modeled by the leadership team. New people learn by observing that.
The onboarding process is very carefully designed, nothing is left to chance and this is all possible without anyone needing to be in-person in an office.