Apparently the Sony statement didn’t convince...
https://screenrant.com/sony-peter-fonda-tweet-response/
“Peter Fonda’s comments are abhorrent, reckless and dangerous, and we condemn them completely. It is important to note that Mr. Fonda plays a very minor role in the film. To pull or alter this film at this point would unfairly penalize the filmmaker Shana Feste’s accomplishment, the many actors, crew members and other creative talent that worked hard on the project. We plan to open the film as scheduled this weekend, in a limited release of five theaters.”
“Apparently the Sony statement didn’t convince...”
If he had just a minor role, they could have cut him out and re-released. I suspect that it never was expected to make money, so even a simple edit wasn’t worth the bother.