Sorry of course 2. ... Nc6
Giuoco Piano

Yes but in 2nd post I corrected myself, it was a typo. I had in mind Giuoco Piano 1. e4 e5 2. Nf3 Nc6 3. Gc4

I told you it was mistake should have been Bc4. If you don't have anything constructive to say then please discontinue.

First, there is no point trying to discuss with people who are obviously trolls.
Second, of course the Italian is entirely playable, and fashionable at any level- either the old 'dynamic" lines, or the "restrained" modern ones.

"First, there is no point trying to discuss with people who are obviously trolls."
Thank you, at least one intelligent person in this thread. BTW, is there a way to ban somebody from the thread?
Secondly, my question comes from the fact I haven't long seen Giuoco Piano in many use on the GM level.

@RansomStark
"Thank you, at least one intelligent person in this thread. BTW, is there a way to ban somebody from the thread?"
- Yes you can. Just block that user and he won't be able to write comments in this thread.
"Secondly, my question comes from the fact I haven't long seen Giuoco Piano in many use on the GM level."
I don't know where you got this information, but the giuco piano has been a staple opening for severyl years. This year and last year it was also played a lot, by GMs like Wesley So, Anish Giri, Ding Liren and many more. As pfren said, it is quite fashionable since the berlin defense in the ruy lopez is so deeply analyzed these days, while there are still new ideas discovered in nearly every game of the giuco piano (at least this is what Delchev says in his book.)
Quite fashionable is the following line where white plays a4 instead of the usual c3:
Is nowadays Giuoco Piano (1. e4 e5 2. Nf3 Nf6 3. Gc4) still viable in competitive play?