Not sure that really answers the OP question - he sold his gravel bike as he wanted to train and race CX on his CX bike alone. He also has 2 x mtb in his stable and although I did skip through the video in places, didn't see him doing any road riding at all (although I may have missed it).
Hey, I too recently picked up a Ritchey Breakaway TI for a helluva deal. I started with a Surly CrossCheck as my do it all bike and aside from being heavy, I was happy with it being my daily commuter and long ride bike... until the itch came and I picked up a road bike. I was shown the light on what a proper (abeit not properly running) road bike can do. I don't commute with the Breakaway because its too nice, but I have thought about a more road oriented bike as a commuter.More recently I got more of a 'quiver killer.' A Ti breakaway road bike with sort of racing-to-endurance geometry also curves rear stays. I put on 25c gator hardshell tires and in winter the Crudracer fenders. really wide 22sp gear range with 50-34 and 12-40 on the back. Got a bucket full of rackless bikepacking bags for it, so can do weekend getaways too. I find it handles the gravel trails here just fine, even shor stretches of snow recently, so the cx bike for me is overkill and feels too slow (also have issues with heel clearance, but not on the new road bike).
Yes... well, sell most of your other bikes.and sell everything else?