Tool usage
You can disable tool usage in the new config by setting allow-tools to false. If you want to reenable it change it back to true.

Block blacklisting
You can blacklist blocks from being silk touched. In these situations, the block will behave as normal. Simply add the block's internal name (eg. diamond_ore, or minecraft:diamond_ore works too) and it will be blacklisted.
Example: block-blacklist: ["diamond_ore", "minecraft:stone"]
This would blacklist diamond ore and stone.

You can reload the config for these by running /ranboo (requires the ranboo.reload permission)

Bypasses for both of these
If you want to bypass the block blacklist and disabling of tool usage, you can give yourself the ranboo.bypass permission, which bypasses these. Note that there is no specific bypasses for either one, you either have both or neither.

TLDR:
You can stop tool usage with the allow-tools config option.
You can blacklist blocks from being silk touched.
You can reload the configs for these with /ranboo if you have the ranboo.reload permission.
You can also bypass these with the ranboo.bypass permission