No, there shouldn’t only be one way. While some accessibility appears pointless or redundant, it doesn’t mean there should be just one.
Do you really use copy and paste one way? Do you open apps one way? Do you only control music one way? Etc. I’m not sure if you ever considered how much of your actions have been accomplished in multiple ways.
It sounds like you want Apple to just cater to you. I use the dashboard to store my widgets, just let there be options.