someone is gathering statistics on Tao tables

Hi experts.
I have been told that Tao tables cannot have statistics gathered, but what I see I don't know how this tables have statisitcs.
How they are gathering statistics?
PeopleTools version 8.47.14

  1  select distinct trunc(last_analyzed) from dba_tables where table_name like '%TAO%' and
  2*  rownum <10000 order by trunc(last_analyzed) asc
SQL> /

TRUNC(LAS
---------
24-JUL-11
25-JUL-11
26-JUL-11
27-JUL-11
28-JUL-11
29-JUL-11
30-JUL-11
02-OCT-11
23-NOV-11
12-DEC-11
24-FEB-12
05-JUL-12
31-AUG-12
09-OCT-12
18-NOV-12
23-NOV-12
09-DEC-12
10-DEC-12
18-DEC-12
21-DEC-12
07-JAN-13
13-JAN-13
21-JAN-13
22-JAN-13
23-JAN-13
25-JAN-13
28-JAN-13
29-JAN-13