This is entirely out of context and very deceptive Joseph...
Vitalik was in a conversation with a bunch of trolls and was making a point. You should see the entire conversation here:

There will be alternatives. Qtum, EOS, and ETC. Three projects that will have a chance to dethrone the incumbent.

The point you are trying to make apply to all of these. Don't know what you are talking about.
You raise points about the 'mutability' without reasonable discussion about why that is a worry in the first place.

Take a look here to see what Vitalik was actually talking about.
https://medium.com/@VitalikButerin/minimal-slashing-conditions-20f0b500fc6c

I don't know why you get 500 bucks for this....