bitcoin for blind people may be a bit difficult to realize because in my opinion if using voice is likely to reduce the level of security
using a brailer is also not possible
I think bitcoin is not suitable for blind people at the moment, there are too many factors to consider when developing related to this
It'll be challenging (but not impossible) to make Bitcoin wallets accessible to blind people. The main issue would be preserving security when using text-to-speech features on the wallet. Imagine hackers being able to intercept the audio allowing them to obtain the private key or mnemonic/seed of a blind person's Bitcoin wallet. It'll greatly compromise the security of a person's funds. I think that developers will somehow find a way to mitigate this issue. As I've said before, everything will depend on demand more than anything else. If most Bitcoin users aren't blind, then there would be no reason for developers to integrate accessibility features on wallet software. So far, I haven't heard of a blind person that's interested in Bitcoin. If no one with disabilities is interested in Bitcoin, then everything will remain the same way as it is right now.
All in all, there's more to Bitcoin "than meets the eye". Developers would need to solve other issues first, before thinking of making Bitcoin accessible to all. Once privacy and scalability issues are solved, then we might be able to see wallets adopting accessibility features in the future. Until that happens, blind people will need to delegate someone to manage their Bitcoin in order to participate in the decentralized economy. Just my opinion