I basically agree with this. The scene between Rhodey and Steve really could have done with a sentence or two of internal conflict/hesitation from Rhodey, that would have made it less jarring. But not only is Tony missing and possibly presumed dead again, which means Rhodey is holding the fort alone (Vision is gone as well at that point), but in a situation that dire, with Thanos a minute away, Ross is still insisting on calling Steve et al war criminals who are to be hunted instead of trying for any kind of constructive and helpful solution. That wouldn't sit well with Rhodey regardless of his stance on the Accords, so when Steve shows up at personal risk to help, he's okay with that. (My actual problem is that they made Ross the sole face and executor of the Accords after T'Chaka's death, but that's a left-over Civil War problem.)