Those who did their due diligence to understand the dynamics of
hashpower switching between BTC and BCH were able to 2x, 3x, or even 4x their holdings.
Not exact matches
In a nutshell, SegWit2x's original plan was to kill off Bitcoin by making sure all
hashpower was being removed so that no new blocks would be produced and people would be forced to
switch to their altcoin.
A big concern for the developers of Bitcoin Cash was the lack of
hashpower that would
switch to the other chain.
Core supporters claimed how
switching hashpower to back up non-consensus rules and blockchains is not an «upgrade» but rather a literal definition of a 51 % attack.