Goldilocks -“Health: Is it worse than breaking your fast on wine following Yom Kippur (or Tisha B’av, when it occurs on Shabbos or Sunday)?”
First of all, you can use grape juice, but Pesach – GJ is a big problem.
2nd, having wine & then eating 2 seconds later isn’t such a prob. By Pesach, that isn’t the case.