I remember sometime around the pandemic, I had read that Ben Stiller went vegan, originally to support his daughter, but he decided to continue for health and moral reasons.
However, there are a few things which lead me to believe that this is no longer the case.
In the show Severance (which he directs), there are at least two episodes which involve consumption of non-vegan food. One was a sandwich which definitely had real turkey on it. Another was the "Egg Bar".
Now, i have even read that apparently Ben had reservations about including the egg bar due to his "personal distaste for eggs", but he decided to leave it in, as he felt it was important.
Not sure if this means he had ethical