That's an excellent and important question about creating more inclusive public spaces. The short answer is: it's complicated, and simply removing armrests from existing benches is often not the recommended or legal solution.
While the intent to improve accessibility is commendable, fixed armrests on public park benches frequently serve a structural purpose, providing stability and preventing the seat from sagging. Removing them could compromise the bench's integrity and safety. More critically, many modern benches include armrests specifically as an accessibility feature. They provide crucial support for individuals with mobility challenges to sit down and stand up safely. Removing these would actually reduce accessibility for that group.
For true inclusivity, the goal shouldn't be to modify standard benches by removal, but to provide a variety of seating options. The best practice is to install specialized, armless benches or benches with open-ended armrests within the same park area. These designs allow for easier transfer from a wheelchair and provide space for individuals who need more room to sit comfortably.
Furthermore, public installations must comply with regulations like the Americans with Disabilities Act (ADA). The ADA does not mandate the removal of armrests but provides guidelines for the design of accessible fixed seating. When planning park furniture, consulting these standards and involving community members with disabilities in the planning process is essential.
In summary, while you cannot typically remove armrests from standard park benches, you can absolutely advocate for and select inclusive bench designs from the start. A park with a mix of seating types—some with supportive armrests and some without—creates a welcoming environment for everyone.