I don't blame her one bit. I think 343i did an amazing job in a challenging set of circumstances, one of which the incredible pressure to launch with the console or bust. Once that initial delay happened, a 2 year delay simply would have demolished the Xbox brand and seriously hurt Game Pass. The decision to launch when they did was the correct one.
Bonnie Ross made sure Halo: Master Chief Collection lived up to its full potential. They didn't abandon it on her watch, which many would have forgiven them for doing. That isn't just an ordinary game collection. It's the best ever game collection of its kind ever with so many additional connecting features and enhancements across the entire slat of past Halo games. Shame when Halo Infinite ends up proving just how wrong some people truly were the entire time, likely by the end of 2023, Bonnie won't be there to celebrate that huge turning of the corner. Everybody is free to have their opinions, but to me 343i under her leadership saved Halo as a franchise. Under Bungie it wasn't being treated in those last few games like the massive juggernaut I felt it was. It was a great game, but it seemed stuck in so many original xbox paradigms, especially with relation to how the campaigns were done. Halo just didn't feel like as big a sci-fi epic as it should be.
Mass Effect 1-3 and COD 4 had me feeling like, "Halo needs to feel like it's this grand, like the stakes are this big." For me Halo 4 did that, bringing more of the Halo novels into the games than ever before, and for that I will forever be thankful to Bonnie Ross and 343i for making THAT Halo a reality, and for bringing the type of depth to the Master Chief that had always been there in the best books. Halo 5 didn't stick the landing on story, but I sure loved what it attempted to do, and it dramatically improved Halo's core gameplay and the amount of verticality to be expected in the games.
What Halo 4 and 5 did right is they weren't afraid to dive headfirst into more of the Halo Universes' mysteries, more of the ancient civilization or secrets of the universe that were responsible for the Halo rings. We got shield worlds, prometheans, the didact, the librarian, Blue Team, a badass team of Spartan IVs led by Locke (a character I'm still a huge fan of), we got Laskey, we got deeper, more up to date Halsey stories, we got the UNSC Infinity, the forerunner domain, Zeta Halo, Atriox, the Banished, Jega 'Rdomnai, Escharum (best main Halo game villain to date), The Weapon, we got more RPG elements in Halo, an open world, way more boss fights, mini-bosses via high value targets, outposts assaults, forward operating bases.
What I love most about 343i under Bonnie Ross is they NEVER play it safe, love it or hate it. And going forward I hope that mentality does not change. I even loved the squad commands of Halo 5, and hope they eventually make a return. So, all in all, for 343i's body of work, the metacritics of what they've done under her watch is there for all to see, and it's an impressive body of work they should be proud of. I may not like how Bonnie Ross was dealt with, but I will always respect what she has done for Halo, and I'm as excited for 343i and the future of Halo as I've ever been, and that Halo Infinite Campaign is what makes me so damn confident. That ambition in the campaign was meant to be the "dialed back" vision. I can't wait to see the full fledged plan when everything is coming together for them right with timing.
Clear
's post has a very good point that there may be more to this. 
