It's 3 minutes. It lasts 3 minutes. Getting knocked into lava is more dangerous to a new player than bad ladybug luck. So on the scale of what can happen to players accidentally, it's basically a rounding error.I think it is, this is so unnecessary, imagine killing a lady accidentally, or being a new player and not knowing about that, there’s no reason for it.
I don't think it's a good idea, but I don't think it's a bad one either. Nor do I think bad ladybug luck alone is a bad enough idea to justify calling luck a "terrible feature". In terms of actual harm caused to actual players, it's pretty trival next to things like getting the WoF summoned on you by accident.