They are not building on top. They want to burn BCH and replace it with proof of stake. Look it up.
1) They are implementing Plasma as a sidechain. If they implement PoS it would be in a sidechain. We can't prevent people from burning BCH. Stop wasting your energy.
2) If this destroys BCH, it has already failed IMO.
3) Sorry for being rude. Why do you see it as problem they build sidechains? People should be free to speak out. Sorry.
