Remathilis
Legend
Perhaps, but quite honestly movies let that kind of thing happen all the time. When was the last time Luke Skywalker or Jack Sparrow missed a rope swing? Rarely if ever (and if they did, it's a plot point). And if the roll is so low that it's all but guaranteed, why bother rolling?On success the net effect is the same but swinging on a rope is (for a typical person on-over normal terrain) somewhat more difficult than walking, thus swinging on a rope when you could have walked instead tells me loud and clear that for whatever reason you're willing to voluntarily make things riskier for yourself than you had to.
A check of some sort, even if trivially easy to pass, merely mechanizes that added risk.
To be frank, DMs who are overly cautious about stunting is how we ended up with 4e martial powers. Players who wanted to do cool things got tired of jumping though hoops to do them, so they got encounter powers that allow them to always find a rope to swing on (1/encounter, no matter where they are) that just works. I'm not exceptionally fond of that style of play either, but I understand their frustration.