It's funny because in that Twitter thread this[0] is linked:

     Reactions to stages in the life cycle of cryptographic hash functions
     Stage               | Expert reaction                             | Programmer reaction                             | Non-expert ("slashdotter") reaction
    ---------------------+---------------------------------------------+-------------------------------------------------+----------------------------------------
      ...                |  ...                                        |  ...                                            |  ...
     General acceptance  | Top-level researchers begin serious work on | Even Microsoft is using the hash function now   | Flame anyone who suggests the function
                         | finding a weakness (and international fame) |                                                 | may be broken in our lifetime

Just to be clear: I don't doubt JP Aumasson's reasons to believe so. I doubt yours because as far as I can tell it's basically argument from authority ("JP Aumasson said so!")

[0] http://valerieaurora.org/hash.html