The other two freedoms #0 (freedom to run) and #2 (freedom to share) are readily obvious to non-technical users. "Double click to run" and "drag and drop <on external drive> to copy". Unfortunately, they are also often permitted by non-free/libre software. So non-technical users that can readily see they can do #0 and #2 and generally have no litmus test to further determine whether the software is "free/libre".
This is a case where the ideology's practical concerns hamper its purity. I critique despite generally liking the FLOSS ideal, but it's important to know its flaws.