The same universe where wearing a pointy hat and lycra from head to toe in public is deemed acceptable, the same universe where spending 10hours a week sat in a dark garage riding nowhere is normal, the same universe where staring at a black line for 4 hours a week is fine. Honestly, I really don't think you can apply the rules of social engagement to the rules of a sporting context! There may be valid reasons for wheel sucking not being okay, but I really don't think that 'social acceptability in the real world' is relevant!