It's just a quality of life thing. technically its not needed. anyone can make due with search.
Its just the fact that Construct is deleting events that I don't actually see is the troubling part - it just feels bad. If I say delete an object or a variable and I forget that I used it somewhere..or I'm thinking some thing was put somewhere by accident or unused - I often find out later when something breaks. Again this applies to large projects.
And yes, that's how I currently use Find, but if you name it similar to other objects and if it has a long name you don't remember and only type a partial, you can get more results of something making it hard to see.
Very rarely do I spell my object names out fully when searching and lots of them share the first 10-15 characters. I never remember exactly how they are spelled.
Opposed to just clicking a thing and hitting the delete key - and it telling me what events/actions its going to delete as a result of that object/variable being deleted...that's much faster and friendly.