... The latter half of the interview addresses Watanabe's work on The Animatrix anthology anime, where he described an extended interaction with a Hollywood producer called Spencer Lamm. Watanabe described Lamm as a person who made many "stupid requests." Watanabe said that he had a particular problem with Lamm acting as the gatekeeper to the Wachowskis and would not let Watanabe's ideas through to the original creators for approval unless he liked them personally.
Watanabe said that their relationship was so poor that when he went to Los Angeles for the recording sessions that "if I saw that producer, I would just punch him in the face." Lamm ended up not showing up to the recordings, which Watanabe described as "unheard of." Lamm worked as executive producer on Matrix-related short "Final Flight of the Osiris" and producer on The Animatrix in 2003, according to IMDb. His other credits include website design.
Watanabe said that he had to concede on some of his original ideas when working on The Animatrix, but the experience taught him how to deal with difficult people. Amusingly, he remarked that when he now deals with interfering people, his strategy is to "send back very small corrections or adjustments just before the deadline." ....
source:
https://www.animenewsnetwork.com/interest/2023-01-27/shinichiro-watanabe-spills-the-tea-on-the-live-action-cowboy-bebop-the-animatrix/.194229