Yep. I was an intern at Disney Feature Animation when GIMP first came out. It was really exciting, an alternative to Photoshop (which used to run on linux!) and our in-house painting tools. I pushed for artists to use it, but was told by management to stop mentioning it as "Disney could never use a tool called GIMP". Also that reaction from several artists (who were already tech-savvy, linux using folks in the exact target audience) so it wasn't just "corporate". TBH I think a lot of programmers do this intentionally to protect themselves from their little project ever becoming too mainstream.