Fair, but very very very often (unless you are a full time daily user of the commandlet and all objects you may run into or have a photographic memory) you don't know the actual specific property or object exact verbatim and have to rely on a very quick search to remember that one object you used 3 months ago once that you need now for example. Or you want to see where/if something is referenced in another subset of programs like a specific IP, another program, a resource taken up, etc...

That is mostly what grep is used for: discovery and reference, which powershell I don't think has a substitute for so instead you have to sort through documentation and forums.