If I can solo the fight, it's my right to do so. Why should people who failed the mechanics, potentially multiple times, get to forcefully reset the fight and waste my time?

For example, if a party wipes 3 times in a row, and I just decide to solo the fight on the third time, maybe it's for the better since they might never get through the fight otherwise. It also allows them to sit and watch someone do the mechanics flawlessly for ages which has the effect of teaching them the mechanics.