It's worse. Fabric softener is composed of an anti static oil. When you run it in the laundry, it coats all of your clothes with a very thin layer of oil.
Which is why towels dried with fabric softener and dryer sheets don't absorb water anywhere near as well as plain towels dried without it!!
My mom complained to me for years that I wasn't "doing it right" by not using fabric softener. But her towels are useless compared to mine! She continues to spends $100/ year on fabric softener while on social security. Over the year she has spent thousands and thousands of $$$. 🤦♀️
The best soap for washing machines is powdered. They remove all the extraneous crap that can also cause mold growth in the washer. Front loaders are really bad about this too.