Nothing is impossible, but as you mentioned, Roma are far below Inter and Napoli. For now, Juventus, Napoli, Cremonese, and Roma each have 6 points, while Inter lost. As for Roma, they look quite solid to me they’re winning matches by narrow margins, but everything seems calm and controlled. They have a good team and also a quality coach who can achieve a lot, but as you said, the focus should shift to the UCL and fighting for that part of the table.
It might not be wise to give up the Scudetto fight at the beginning of the season. Just because a team doesn't have a star player doesn't mean that the team is weak, maybe Roma coach Gasperini has worked hard with his players and improved their skills. You can't deny the improvement of the players. So I will still list Roma in the fight for the Scudetto. We must wait until the end of the league to see what they do in the end.
Another thing to note here is that every club's first goal should be to win the title and qualify for the Champions League. If in the end winning the title is not possible, then the alternative plan must be to qualify for the Champions League. I hope their plan will be the same.