Hello Believer
They have slightly different meanings:
1. Too much information is inaccurate.
— this is a statement about information in general.
2. Too much of the information is inaccurate.
— this is a statement about a particular body of information (perhaps the information in a government leaflet).
3. Too many books end happily.
— likewise, this is a general statement.
4. Too many of the books end happily.
— again, a statement about a particular set of books (perhaps a collection of hospital romances).
MrP