Lol actually it's the opposite the fact that they can be revived like that
It's the one thing GT actually did well by introducing a setback for abusing the dragon balls lile this and kind of going to the roots of the dragom ball, I actually like the ssj4 transformation too, it's an actual transformation and again goes back to roots
Gohan, Trunks etc should have been exceptions being half sayians/humans hybrids.