I mean I guess I understand in that I'm not surprised Kanye would be petty about something like that. But at the end of the day, who really gives a fukk? Lots of people were signed to production deals and didn't have to let whoever signed them know about every single move they made. Being signed with someone as a producer is usually different than being signed to someone as an artist.
Even if he was mad, to be on some "I'm not gonna pick your beats anymore" shyt is lame. And that can actually hurt producers. When producers sign deals it's usually for x amount of beats in y amount of time. Or sometimes, you have to do x amount of beats for me/our team before you can do beats for outside people. So, if the person you're signed to stops picking your beats, then you might be stuck in that deal until the time is up. That happened to a few producers that signed to G-Unit back in the 2000's.