He did not say the same types of things about FDR as he did about TR. TR wasn’t a socialist.
“Theodore Roosevelt with incoming President William Howard Taft on Taft’s inauguration day in 1909. Roosevelt picked Taft to be his successor in the Republican party and endorsed his election as president. Roosevelt left the White House believing that Taft would continue activist progressive policies as the new President. Such was not to be the case.”
“News of trouble at home was beginning to reach the former President. Conservation and tariff policies were dividing the Republican party and the “Old Guard” of conservatives were taking control.”
Source: http://www.theodoreroosevelt.org/life/biopictures.htm