I wish for all the blind, mute, deaf, and paralyzed to regain their senses/abilities.

It works for all those who are disabled now, but not for any who become disabled in the future. Society lets any progress we've made in accessibility lapse, and the next generation has to fight the last century of battles that the community has won all over again. No ramps, no textured or audible crosswalks, no fluent braille users to learn from, and even less patience and understanding from everyone else.

Granted. It lasts 30 seconds.

Every person healed "takes" their sense from someone who had it. ie - A blind man can now see, but the sighted person next to them is now blind.

Granted. All humans were blind to undefinable-xxx. They now have the third eye seeing with clarity. The visions of cthulu quickly drive all of humanity to extinction.

Granted. 3d printing of medical devices and brain microchips advance such that these people all get their senses and abilities. They quickly merge with machines by having excess memory in an external hard drive and sutured on personalities from the more advanced ai. Soon humanity is enslaved by the formerly blind, mute, deaf, and paralysed.

Granted. All the organizations that train service dogs lose their funding and are forced to euthanize the dogs.

They become zombies that need to eat brains to keep their senses/abilities.

Granted, they all know it was you and all hate you for taking the choice away from them of whether to be so or not.