Why some categories are set off by default?

I am new to LanguageTool and managed to run it locally. My question is what is the reason that some of the rules or entre categories as set off by default? Is it because they are not tested or duplicated?

Hi gin, there could be several reasons. Some rules are not robust enough (i.e. create too many false alarms), some are just not useful for everyday use, e.g, the Wikipedia-specific rules.