Different sized bills are harder to stack in a wallet. Braille is a much better way to handle the problem. No cost to the majority, while solving the problem for the minority.

> Different sized bills are harder to stack in a wallet.

This has never been my experience. What is the challenge?

As long as the largest bills fit and the smallest bills don’t get lost I don’t understand how it’s so much harder.

I'm used to Euro notes, and having each denomination be a different colour and height in my wallet is very useful for pulling a specific one out.

I keep them in order, with €5s in the front.

It seems like having equivalent sized notes is just your personal preference, and that you are projecting that as an inconvenience onto "the majority". Based on the comments it seems like even people without disabilities mostly don't care, or actually think that it is a good feature.

For my side, even if I did agree with your preference, I am perfectly willing to deal with the incredible hardship of slightly different sized notes in my wallet in exchange for a society where disabled people need not fear being ripped off.