>Wait, this Disney lawsuit thing is news to me. Disney owns a trademark on the name Dumbo https://trademarks.justia.com/779/79/dumbo-77979919.html as well as copyright on the movie Dumbo of course.

I suppose they might think to argue that someone selling televisions with the name Dumbo would be trying to tie their product in with the Disney trademarked product. I don't think that would be considered too much of a stretch so I don't think you would do too well with continuing with that name.