Just ICYMI,
Greinke was an ace starting pitcher when we acquired him, in case you don't know who Greinke is. Arte chose to signed slugging OF Hamilton for $25 mil/year than give it to Greinke. Don't worry, you'll slowly understand.
Add in the fact that Ohtani has missed two seasons pitching already, but he kept hitting makes it easier for Arte to spend cash on Ohtani b/c that hitting and slugging will still be there as a DH, at a minimum. I want to reiterate that Ohtani has already missed TWO SEASONS as a pitcher. Don't worry, you'll slowly understand.
== More Context ==
I know you don't do research work, but I'll fill you in on how Arte truly loves slugging over pitching with selecting OF Hamilton over ace SP Greinke.
And at the time, the farm team didn't have much pitching prospects. Also, at that time, signing a top-free agent would cost your team its first round pick. Then GM Dipoto made an in-season trade for Greinke in hopes of re-signing him as well as not get into a bidding war for Greinke along with not losing a first round pick. The org gave up SS Segura, who would become an all-star, and other pieces.
Moreno wanted Hamilton over Greinke. Not only did it hurt the Angels' pitching depth, but also lost another first round pick. Moreno signed Pujols the previous off-season. That's two, consecutive first round picks lost due to signing FA's.
Because Moreno wouldn't sign any expensive pitchers, GM Dipoto started trading away positional players for young, cost controlled pitchers. Dipoto was able to secure some monies for the bullpen in Huston Street and Joe Smith.
Flash forward to this past off-season. GM Minisian wasn't given money for top-end starting pitching, but he was able to secure monies for the bullpen in retaining Raisel Iglesias and signing Aaron Loup. Hmmm... sounds eeriely familiar.