I doubt Ilhan Omar wants to take a heaping pile of Anoka County, which would vote against her in a primary. And she's very much part of the DFL establishment, so her opinion matters to map drawers unlike AOC.
I actually would argue that Omar may prefer taking in Anoka county rather than the surrounding blue suburbs in Hennepin.
Omar's big threat comes from a primary. Having Minneapolis in the seat guarantees her safety in a general, but a primary challenger could possibly take her down. Having the blue suburbs of Hennepin shores up Omar in a general-election sense, but it decreases her odds of holding down in a primary, since these very blue voters could turn against her (as many did in the 2020 primary).
Anoka county is much more red, which would make her seat closer than her current. But in the end, that's not the threat that she's facing down. Meanwhile, the purple county of Anoka comes with the benefit of having fewer registered D voters who could go against her Minneapolis base and depose her.
So, if Omar is looking to shore herself up primary-wise, Anoka is the way to go.