Personally, I think: after all, sweeping the world and cleaning the house are not the same type of skills. Small things are not necessarily the basis of big things. Although great events also need to pay attention to details, that detail is different from that little thing. Therefore, there is no necessary connection and specific analysis is needed. For example, you can say that a person who can't even type on a computer will definitely not talk about QQ. This is right, because typing is the basis of computer chat. But you can't say someone who can't even type, let alone write a book, because there is no necessary connection between the two. For example, Zhang Ailing wrote so many books in her life, but she didn't even know if the house where she lived for five years had a clock, but it turned out that this didn't prevent her from becoming a writer.
To sum up, it depends on two points: first, whether the small things are not done well is a matter of attitude or ability [if you ask Zhuge Liang to be a county magistrate, he will definitely not be able to do well, not because he is incompetent, but because he thinks you look down on him and will not do it seriously]. Second, it depends on whether there is a foundation between small things and big things. If there is no internal connection between the two, then there is definitely no big connection between doing small things badly and doing big things badly.