Maybe that is the most realistic target at the moment for Juventus. The difference of 13 points with Napoli who are at the top of the standings at the moment will really be difficult for Juventus to catch up, whose performance is still uncertain. Unless Juventus continues to win the remaining matches and hopes that Napoli and Inter Milan and the other teams in the top 4 experience defeat or lose points. But hopes like that are a little difficult to realize.
Thiago Motta may still have quite high hopes. But yes, the most likely target that Juventus can pursue is to get into the top 4 in order to get a UCL ticket. And Juventus' main focus right now is probably just getting maximum results in the Champions League they are currently participating in.
Motta has shown that he is no more effective than Alegre was, too many draws, the team still has the same problem that it had, their attack is weak to compete with Napoli and Inter and even weaker teams. They will not get the Scudetto this season, even if they can take points from Napoli in this match, it will only give an advantage to Inter, who are on a very good run. Juventus should think about strengthening the attack, or about changing the coach who will insist on this more than Motta.
I also see it the same as you that Juventus does have a pretty good chance to be better but I think Motta just wants to maintain the performance that Juventus has had so far, a draw is an option because their attacks are not that effective in attacking stronger opponents or when playing against weaker teams, against Inter Milan and also Napoli of course it is very difficult for Motta, changing coaches I think it will take more time, and the big question is who is the right candidate for Juventus, sometimes we think it is better to replace, but the matching process will be very difficult and takes time to adapt to the TEAM.