This is looking more and more like a desperation attempt to further baby the back end of the rotation. We (fans) are measuring how deep the start or appearance is by number of innings pitched and the Twins staff is measuring by the number of at bats that pitcher faces.
If we compare the other pitchers that have been through the pipeline during their first two years at the MLB level, we seem to get similar results. I included Joe Ryan even though he was an almost finished product when he came to the Twins and Paddack, since up until this year, he has not been a pitcher that goes deep into ballgames.
SWR 2022-2025 (1 start in both 2022 and 2023): 41 games and 18.4 AB/game
Festa 2024-2025: 21 games and 17.9 AB/Game
Ober 2021-2022: 31 games and 18.3 AB/Game
Ryan 2021-2022: 32 games and 20.0 AB/game
Paddack 2024-2025: 32 games and 20.8 AB/game
As stated above, Ryan was a nearly finished product when he was traded here. Paddack is my control as a back of the rotation starter since he is a veteran. As we can see, Paddack gets more run, likely because of his veteran status than the younger pitchers listed above. IMO, Ober is the only pitcher here who has graduated the pipeline, and his AB's/game was below SWR's at a similar time in their respective careers. The concept of never trusting a young pitcher seems to just be the Twins way. Ober and Ryan in 2021-2022 were not the "bulk" pitcher with an opener in front of them. They were allowed to start and figure it out. The difference is that the team wasn't expected to compete in 2021 and 2022, especially when they faded so badly in 2022, whereas the expectation to compete in 2025 has brought added pressure to do something to save the season.
I personally think they should ditch the opener. They don't have a reliever capable of going multiple quality innings like other teams when they use an opener. The other issue of the opener is that when it doesn't work, as in the opener seeing 6+ batters in the inning, you're really stuck as to 1) leaving them out there to rot to get out of the inning, 2) bringing in your "starter" in the middle of an inning, or 3) waste another reliever to get out of the inning. They also don't run into teams that suddenly turnover their lineups after the opener is out of the game (right Rocco?). Starters just need to be more efficient with their pitches and this solution searching for a problem goes away. When you have a batter 0-2 and then throw another 6 pitches to finally get them out, the starter is going to wear out quicker.