YOU SAID:

But if there's one thing I can say about the people who say that:

INTO JAPANESE

しかし、それを言う人々について私が言うことができることが1つあれば：

BACK INTO ENGLISH

But if there is one thing I can say about those who say it:

INTO JAPANESE

しかし、それを言う人について私が言うことができるものが1つあれば：

BACK INTO ENGLISH

But if there is one thing I can say about the person who says it:

INTO JAPANESE

しかし、それを言う人について私が言うことができることが1つあれば：

BACK INTO ENGLISH

But if there is one thing I can say about the person who says it: