Reds wore blue as secondary color as far back as the early 1900s. I don’t think it’s copying the cards. There’s blue in the 1919 uniform and no one would mistake that for the Cards. If the Reds did a navy hat with a red C and bill I think it would be easier to confuse with the Guardians or the Chicago Bears more than the Cards. No team wears a full dark blue jersey. That would be pretty distinct IMO.
At the end of the day there’s no right or wrong answer. It’s just like our opinion man.