I don't see how Julia was treated that badly, compared to everyone else (the training camp process is ridiculous). I like her just fine and would've been fine with her making it, but her cut does not even come to being one of the more egregious examples or unfairness or politics in the DCC world through the years. Even this season, Shaina has more reason to be mad than Julia, and Kelli was meaner to both Jalyn and Madeline, IMO.
I gather that Julia is a lovely person and well-liked among people who know her, but as someone who doesn't know her, she didn't come off like she is the sharpest tool in the shed on the show, and the conspiracy theories (Lisa got her cut; the NBC anchor set her up at media day) have not panned out. Beyond the absurdity of cutting girls at the eleventh hour, which they need to stop, Julia's cut seemed fairly standard to me. Meredith is basically the only one who I definitely would've cut over her.