Why? It says for ingredients on can: Squash. So it is simply squash, pureed. Which is what I need for stuffed shells filling, ricotta cheese, garlic, parmsean and also pureed squash.... ?
You said "fresh cubed squash." Canned squash tastes nothing like fresh squash, and it is cooked to a soft texture and probably sliced instead of cubed. It's very wet and seedy as well. I would not consider it myself. It might be improved since the 70s; that's probably the last time I had canned squash.