Yes. There is nothing to stop someone with a disability getting a Amateur Radio licence.

In the UK during exams, if requested in advance (via RSGB) you can have someone to help with the questions (eg read them), but you must still answer.

For the test for anyone with dyslexia can without asking could print the EX307 on coloured paper and also tint screen to colour to make it easier for you to read on the screen.

The OARC training team know people who with various disabilities who have passed their exams.