While I generally agree with your sentiment, these tools aren't bad ones:

- Santa is a very common tool used by macOS admins to lock down binary and file access privileges for apps, usually on managed machines

- Disk Inventory X and GrandPerspective are well-known disk space usage tools for macOS (I personally use DaisyDisk but that requires a license)

- WizTree and WinDirStat are very common tools from Windows admin toolkits

The only one here I can say is potentially suspect is ClearDisk. I haven't used it before, but it does appear to be useful for specifically tracking down developer caches that eat up disk space.