I know it's early, but here's a bit of context on the 9-3 start. I've gone through every season since the playoffs expanded to 16 teams in 1983-84. In total, 91 teams started the season 9-3 from the 1983-84 season to the 2021-22 season.
Here is a graph of their win totals, pro-rated in some cases to 82 games in seasons with fewer than 82 games:

The average is 52.55 wins, with the middle 50% being between 48.71 and 57.70 wins. Only 5 of the 91 teams ended the season with a losing record.
Of the 91 teams:
16 finished the season as the #1 seed in their conference
23 finished as the #2 seed
14 finished as the #3 seed
12 finished as the #4 seed
6 finished as the #5 seed
5 finished as the #6 seed
4 finished as the #7 seed
3 finished as the #8 seed
8 missed the playoffs
The majority finished with a top-3 seed.
I know there may be some room for skepticism as Portland has exceeded pretty much all expectations to this point, but I thought it might be interesting to examine the historical prospects of teams that start out 9-3.