Part of what makes a sport a sport is the consistency of competition.
Do you see Germany playing with different-sized soccer goals than Brazil? Do you see Finnish hockey played with golf clubs? To use your example, do you change the number of pins based on the bowler?
Of course not. The idea would be absurd.
To then put the rules and standards at the whim of the populace is crass and ridiculous, tantamount to making a motor-race more like a racing version America's Got Talent where 'viewer votes' materially affect the outcome.
Let's say Danica Patrick joins the ePrix. She promises to drive topless if she wins the vote, and does, beating the next-best driver by 0.05 seconds. Did she win because she was a better driver, then? Or because she had tits and was willing to show them? Maybe Kim Kardashian could join the next race and really make it competitive?
I don't know about you, but I'm frankly uninterested in any 'sporting' contest in which the victor is decided by who prompts more slavering fans to call in. That's no longer a "sport" but merely "celebrity".