Yes, I can recommend it.
I first used macOS Cocktail about 17 years ago on Tiger (10.4) systems when I was a Mac system administrator. It was very helpful then and is still helpful. I have found it to be one of the few such utilities that has stood the test of time, is stable and useful for a variety of purposes. It has been helpful to me on every Mac & release of OSX/macOS that I have ever used, including Catalina. (I have not yet upgraded any of my Macs to Big Sur or Monterey but Cocktail is available for them.)
You will hear a lot of negative advice about nearly all Mac utilities, much of which is justified. But I do not believe that Mac OS Cocktail is in that category. It has never created any problems on my Macs and is definitely not malware.
That said, I only run Cocktail perhaps 1x or 2x yearly ... and I mostly use the Pilot function to ensure that logs & caches are effectively cleaned up before I do a macOS update or upgrade. (And I have customized certain Pilot options to match specific things on my system.) I have also used the Interface function to customize certain General, Finder, Dock, Login & Misc. features that can be done via Terminal but would be difficult and imho risky to do via Terminal.
