XDA is dead, and you just described one of the symptoms of a forum being dead.

That said there are still a small amount of people posting detailed posts for rooting Xperia phones, for how to flash OS updates with unlocked bootloader without losing your user data, for how to bypass carrier restrictions to get international model to work with the 5G bands in the US via build.conf edit and baseband flashing, etc. There are perks of a community being small and niche, and I guess not everyone is brained washed by Samsung’s propaganda they use to justify permanently locked bootloader on their phones lol