It just depends whether you prefer to play against the Rossolimo or Qxd4. I wouldn't be too concerned about the Rossolimo as black can often gain a space advantage and the doubled pawns can actually be useful.
I double checked and didn't find the comment of them saying they were unsure if they want to learn it.
It's better to start with principled major openings as it's teaching you good habits like developing naturally and controlling the centre. The italian is perfect for that: you put a pawn in the centre, develop a knight, develop a bishop and you're ready to castle on move 4. The openings you said are ok but a lot of them are dubious openings that don't follow those principles.
I like the Alekhine a lot actually and know there is an aggressive strategy behind it but in principle you move the same piece a bunch of times in the opening and give up the centre. The Scandinavian you bring out your queen early and move it a bunch of times. The Vienna is more solid but it's not putting so much pressure on your opponent.
The Italian should be lesson 1 in openings as it's super principled. It's ok to experiment with different things after that. It's important to play a variety of positions and also learn how to counter a lot of offbeat and unsound openings. I would say this is an important part of the learning process as you learn how to play without depending too much on an opening system so it can develop some skills. A lot of players lose to these types of openings simply because they are uncomfortable with them. It's also important to learn to play an objectively good opening though. Whether you choose the Sicilian, the French, the Caro-Kann or e5 it's better to start sooner rather than later so you get used to it and become more familiar with the ideas as you go rather than starting from square 1 later on. This is ground up learning.
wtf isnt this a chess forum?