lipos are only dangerous if you're grossly incompetent and negligent with their use and care..such as putting giant motor on it connected to a short gear set with heavy spring on the tiniest stick lipo you can find. That's bad.
Just as bad as throwing it on a crappy wall charge with no auto shutoff or balancer.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.