You should check the weights of some of these devices. Depending on the dispenser you’re using, the device itself and two CO2 canisters will probably weigh more than a small mini pump. Even the Silca Tattico, which is relatively heavy, is lighter than the CO2 canisters I would need to carry for a long gravel race.

As for the size: a mini-pump generally bolts onto the side of a water bottle cage...doesn’t really take up any space that you’d otherwise be using for something else. The CO2 system, on the other hand, takes up valuable space in a seat pack.

Still, for a road ride of moderate distance, I’m with you: I’ll take CO2. But for a longer ride, or any ride that goes off pavement, I’d rather have a mini pump. You never know what will happen.