Ethereum will see a dump, no doubt about that.What we don't know is how much it will get dumped.
And what will happen after that is that one part will cash out and another other part will move into Bitcoin.
The dumb will get left behind if they should miss to get out in time.
Come on man!
This is pure FUD!
Stop hanging around at r/btc, get out and breath some fresh air to get a clear mind!
Blockstream and core is not the same. And as far as I know Blockstream only hired 5 or 6 core developers.
Now do yourself some research and check how many devs core has contributing to it.