If this were true, it would also crash all other anonymous coins.
Bytecoin clones would immediately be inferior to the new "prototype". Non-bytecoin clones will not necessarily lag in comparison with a v2 of bytecoin. It depends what they use in terms of blockchain tech and where they are with their development.
Ok now you're going a little overboard with this line of thinking.
Bytecoin 2.0 is made by developers of Bytecoin 1.0 and worked with CryptoNote. CryptoNote developers may very well be working on Monero by now.
Also Monero has first mover advantage for CryptoNote coins outside of Bytecoin.
You're making some large assumptions here, what is this generation two technology you're talking about? If it's based on the current chain tech then Monero can easily add that on board.
These Bytecoin developers do not seem to be the brains behind the technology, Bytecoin had many limitations that Monero fixed in weeks where Bytecoin had a year to fix it.
I do see your point but this is just FUD: