I'm not sure exactly what this 2.3% is (for "blindness"?), but significantly more than 2.3% of the population wear perscription glasses. Those people have visual impairment and use assistive technologies
Screen readers are not the only assistive technology. Especially on phones, many people use assistive tech to increase font weight or size. Ignoring these options will remove customers.
I'm not sure exactly what this 2.3% is (for "blindness"?), but significantly more than 2.3% of the population wear perscription glasses. Those people have visual impairment and use assistive technologies
Screen readers are not the only assistive technology. Especially on phones, many people use assistive tech to increase font weight or size. Ignoring these options will remove customers.