You could maybe rant about it, since it does specify the ring sizes... I would maybe be a little leery of buying a "Crank Army", though. I'd return it if I were you.
It would not be crazy to find a 105 crankset with rings for around $120, though. You could also find a GRX 600 CS with 46/30 rings that will fit your BB and offer much better ratios for off-pavement riding, assuming your FTP is not 450W.
The bigger question is: why would you want 175mm? All of the cool kids are going 165 now, as shorter arms have proven more efficient for everyone regardless of height.
ride bikes, climb, ski, travel, cook, work to fund former, repeat.
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