While it would be nice if every change that could help a disabled person could be considered a problem with the product until implemented, that's simply not possible. It's not possible for small teams, who don't have time to implement every feature, and it's not possible for large teams, who have to deal with problems like feature bloat in what is a very simple product from a UI point of view.

Fortunately not everyone is forced to use Chrome.

Many people are forced to use it, especially in educational settings. In fact, this kind of accomodation is the law, at least in the United States. A long series of ADA lawsuits have forced platforms like Scribd and Kindle to make their platforms accessible. Unfortunately bringing these lawsuits is expensive and difficult and the battles have to be picked. Google doesn't have a great culture of accessibility, and yet more of their products are becoming required for educational and job settings.

No, it's a feature request. However, if a change is what he wants then he needs to make it more visible and painfully so.