> I assume the OP wants to have a class that doesn't allow positional patterns. The right way to spell that is indeed to add
>
>    __match_args__ = ()
>
>to the class, there's no need to add another flag to @dataclass.

The same however is also true for all the other stuff generated by @dataclass. You can for example disable generation of the init method using

    def __init__(self): pass

and dataclass still has a parameter to disable it.

I agree that a new parameter isn't strictly required to achieve functionality, however I would still argue that it should be added for consistency with the rest of the dataclass api.