It seems contradictory to me to simultaneously believe PoW crypto is a good idea while also believing that you and your buddies can effectively launch a 51% attack on a major network.
It's not a major network these are forks off of Bitcoin made for political reasons that claim to be Bitcoin. 95% of the hash power is on the main Bitcoin chain and not these forks. None of the primary development teams that contribute to the Bitcoin source code support these forks. It would be like making your own US Dollar and calling it USDCash or Dollar WV (Washingtons Vision) and trying to convince people its the same as a real dollar.
Bitcoin cash appears to be the 4th largest cryptocurrency?
There are many valid criticisms of PoW but it's not contradictory to believe PoW can work (i.e. with large enough and distributed enough miner network) while simultaneously attacking particular PoW-secured networks
You should use these safes to store your money. They’re safe unless people do this thing.