Why does accessibility matter?
Today, decentralization comes with a cost. Any time someone says "we could do this on blockchain" you have to decide whether it's worth it.
There's additional effort for developers to build. Additional effort to manage/govern what you build. You exclude a large portion of the population that might have used your centralized app. And anyone who does use it has to pay fees (or you have to cover the fees for them).
Some of these issues are due to a lack of educated developers and users. But that is itself an accessibility issue. You have to be educated just to build on (or even use) a specific blockchain.
You shouldn't have to understand the inner workings of blockchain to use and benefit from it. You shouldn't have to learn a whole new skillset to build on blockchain. It's just a decentralized code platform. Let's not make it harder than it has to be.
More tomorrow,
-Luke
P.S. I believe this stems from well-intended, smart people believing that their good ideas are necessarily complex. A lot of good ideas are indeed complex, but the best ideas are simple.