the wording here is a little bit off imo. i guess you are not talking about the lightning technology used on another network than bitcoin. that means the lightning network it is clearly dependent on the bitcoin network and also i would say, that both networks have an impact on each other. i agree with the last part, that no one is force to use neither networks (some say people in el salvador are now force to use it, but that is another topic)
I get your point. I should mention that there is a possible risk of flooding the network if a large number of channels is closed at once. Uncooperative channel close results in 2 on-chain transactions, so that's how someone could do even more damage.
yes i think changing that would be a good idea - lightning is intertwined with bitcoin