I did look for and turn on all the font adjustment options I could find. It is still nowhere near as easy to read as iOS 6.
Plus, font is not the only problem. Too thin lines for icons, too little contrast between background and foreground colors. These are not changed by the font adjustment settings you are talking about.
Also, app developers have to implement these font adjustment functions in their apps. Even some of Apple's stock apps don't fully implement them. So again, if any app developers are reading this, please, do keep this in mind. Thank you.