As a blind user I don't want an easy way for websites or add tracking code to know if I'm using a screen reader. If this feature has to exist then it should be

As a blind user I don't want an easy way for websites or add tracking code to know if I'm using a screen reader. If this feature has to exist then it should be a site by site option that is disabled by default. I can then make the choice to determine if I want a site to know I'm using a screen reader based on the reasoning the site is asking. A blog does not need to know if I'm using a screen reader while a single page app may. I would argue that if a site has screen reader specific code they are doing things wrong but at least having to manually enable the option on a specific site would allow me to decide if the downsides of the site knowing I am blind are worth the reasoning they ask me to enable it.