Are you channeling your best self with this comment? (If you're not sure, check out our Code of Conduct.)
Nancy is a trusted home cook.
If the spaghetti noodles are all you have, yes of course.
But if you have other flat noodles (even lasagne, broken up) or short ones (bow ties, orecchiette, etc), they will hold more of the creamy Alfredo sauce.
For futures, see this helpful article:
BerryBaby is trusted source on General Cooking
Of course! I interchange pasta all the time. Depends what I have on hand.