Space and Time make language evolves naturally. Space push people appart and make them create different language practices and time set them in words and dialects.
As a result.. Words are being invented everyday and definition are ever evolving. While it is possible to maintain a coherency in knowledge in regards to topics, historical datas, scientific knowledge, arts etc.. It's IMPOSSIBLE to keep language in a cage.
Dictionnaries are usually meant to do just that : to restrict the usage of words to simple definitions, usually in accordance with the material interests of the people who write said dictionnaries and people who use them to often justify reactionnary and restrictive rethorics
This create a situation where meanings are squatched, lost, invisibilized, restricted. Words are often reduced to one or two definitions, usually bad ones without the contextual information that are needed to understand them.
Dictionnaries are an attack on knowledge itself. They are a way to destroy languages and dialects, to reduce their histories and meanings.