Self-explanatory.

CC:T turtles are robots that can move, dig and place blocks in the world. Unfortunately, due to a design choice, they can't load chunks on their own, so an addon mod is needed to give them chunk loading feature. So i thought in allowing the chunkloader block to be equippable by turtles, and when equipped the turtle can not only load chunks but also allow the radius to be set programatically (since the original chunk loader have an UI to allow the player to set the radius, why not allowing turtles to set it via their code as well?

References (thanks @SquidDev): https://tweaked.cc/mc-1.19.x/javadoc/dan200/computercraft/api/turtle/TurtleUpgradeSerialiser.html and https://github.com/cc-tweaked/datapack-example/tree/dev/data/minecraft/computercraft/turtle_upgrades