Reading and writing scale in theory. They require an organization staffed with people who are strong readers and writers. Unfortunately, many people, especially those forced into remote work during the pandemic, are not. They will not read through explicit, clear, but long documentation; they will not respond by writing questions of their own, and will often fail at writing explicit and clear documentation of their own.
Their job is not to write docs, it's to produce a product. The docs are a possible tool towards that goal, but there are others, with different trade-offs - such as in-person trainings.
It is fairly obvious that most of the industry believes the opposite from you here - thorough docs are an extremely expensive way of achieving good context, and as such are usually replaced with training sessions, which seem to fit most people better up to some point.
You are who you hire.