Its quite nice you defined them all and such but that last part basically killed everything you said lmao. Though I gotta agree. Professional traders have their own signals that they follow and well, these trading signals could probably be used but mostly by beginners only, when they are still familiarizing themselves to the way of trading. Also, etoro is good with its copy trading and all but IIRC, there were a bit of negative reviews regarding its special features and desktop experience, but well as a trading site, it works quite well.
Trading signals are still really useful - I don't think that the conclusion negates the entire thread. With that being said, it's important the new traders understand that there are still risks involved with signal trading. I've found the desktop experience with eToro to be really good, and as a trading site it's basically infallible.