The Celtics have the best record, they have been the best team all season. I understand that there is a certain level of insecurity that comes with being a Boston sports fan, maybe all fans. But even though the Celtics have been the best so far, and are still the favorite to win the title, you can't expect that the Celtics are going to win easily against other good teams, whether in a regular season game or a playoff series.
MIL (for example) is a good team. Lillard is figuring it out, Middleton appears to have stabilized, and Giannis is still a dominant player. Doc knows what it takes and the Bucks appear to be listening to him so far. The Celtics are going to have to play well to beat them. But if the Celtics do play well, they can and will be expected to beat the Bucks.
The Celtics are favored to win the title and have a very talented team, but that doesn't mean it is going to be easy. It is going to be a grind