PROCEDURE ANALYSE suggests to turn timestamp into CHAR(19)

Using Procedure Analyse() under MySQL 5.6.30 on a table with about 4 million rows makes the following recommendations:

1. change timestamp to char(19)
2. tinyint to ENUM (I noticed it's overzealous with ENUMS in general)
3. change varchar to char(N)

I can see the point of changing varchar to char when appropriate, but the first two recommendations strike me as odd. Thoughts?