User blog comment:Kaido King of the Beasts/Chapter 884: Sing or Swim/@comment-31429799-20171103140934/@comment-96.42.191.143-20171104002352

Yes they removed all comparisons because Oda has already confirmed he is not logia.

Katakuri's first example of his DF, when kicking Luffy, shows he has to produce Mochi, not just convert from his body.

Luffy does not transform to rubber, he is always rubber. Based upon your example then Katakuri would always be Mochi. If he was Mochi then as soon as someone cut his limb off it would be lost, rather than him simply re-connecting.

If Katakuri could simply be Mochi and is such a trained fighter, he would have changed to Mochi when being pulled into the mirror. Instead he stated he could do nothing to prevent what Luffy was doing.