Carbon is where it’s at, just as strong, doesn’t rust and way way lighter.
For the mostpart you are indeed very right, but steel is more resilient to knocks and scrapes and being chucked up the road. It’s also eminently easier to repair, hence it will always have its fans regardless.
But if it’s performance you’re after, then yes, Carbon has been winning in that respect for quite some time now.
As for Bianchi’s. Good bikes. What more do you want me to say? They’re one of, if not the oldest bike companies out there so they must have been doing something right all these years. They’re usually more expensive than their American or Far Eastern counterparts, but they will also argue you’re paying for the heritage in the design. You pays your money and takes your choice.
But if the shop I work in was burning down, and there was only one bike I could save, it would be the Bianchi Oltre with Full Campag Super Record, just so you know! It might be completely pointlessly expensive, and you can probably get the same performance for much less money, but by god it’s lovely!