• There are 214 public static functions in this codebase.
• 12 more are private static, 37 protected static.
• 353 are public but not static.
• 13 are private but not static, 155 protected.

In total there are 738 named functions (excluding magic functions like __construct). In other words, about 3/4 of all the the stuff in this codebase is public. And more than 1/3 of the public stuff is static.

All this is essentially Technical-Debt. Priorities are:

• Make as much code as possible private. When a method is only public to be able to test it, use TestingAccessWrapper.
• Split large classes up into smaller ones. E.g. it might be worth to move all hook handlers into separate classes.
• Make as much code as possible non-static.
• Avoid global $wg… as much as possible. Inject Config objects instead.