I should stay away from this, but statistically most people die with their vision good enough to not need app accessibility feature. Specifically 0.1% of people aged 55-64 are blind and 3.9% of people aged 85 or older are blind or significantly visually impaired. Meaning over 96% of people pass away seeing.
I don't agree with OP, but I also don't agree with overdramatizing the problem at the expense of facts. There are dozens of millions of people worldwide who deserve accessibility app support of a major platform, like Facebook or Instagram, but lo and behold, Facebook and Instagram do support vision accessibility.
Threads, meanwhile... launched 2 days ago. They're not a major platform yet. They're only starting, and they'll be adding accessibility features in time.
