It's pretty much the same rotation as last year. It's not unusual to expect pitchers to no go from bad/ok to great, all at once.
2023 Games started:
28 Bello (team was 17-11 in his starts)
23 Crawford (9-14)
21 Houck (9-12)
20 Sale (12-8)
19 Paxton (8-11)
16 Pivetta (7-9)
10 Whitlock (6-4)
9 Kluber (3-6)
Our 5 starters had a team W-L record of 48-50 in their starts (49% win,) and in starts by others, many by Kluber and "openers," the team went 30-34 (47%.)
I'm trying to remain optimistic about this rotation. I have posted how all of them have had some rather long stretches of pitching very well as SP'ers, but none have ever put a full season together.
It should be viewed as long odds that 4 or 5 of them put it all together at the same exact time.
(I'm not trying to rain on their or your parade. They can do it. I'm just saying it's not illogical to expect things won't end up all that great for these 5 starters, combined.