No, it really does say this. There is expressly no free TV licence for being blind, instead a 50% discount.
https://www.gov.uk/free-discount-tv-licence
https://www.tvlicensing.co.uk/check-if-you-need-one/for-your...
https://www.gov.uk/free-discount-tv-licence
https://www.tvlicensing.co.uk/check-if-you-need-one/for-your...
If you're blind, you almost certainly qualify for a free license.