Certainly Ethereum has risks of systematic failure as it is so centralized and with major changes being implemented at its base level, but I don't think this causes a meltdown.
With that said, this is the first sort of cypherpunk action I have seen in quite some time. I fully support being ungovernable. This shows how important the removal of transaction history is (privacy) to a medium being a currency. It also shows how retarded regulators are which continues to erodes the normies trust in them.
Consider the currency most used in illegal activity. Their are studies that show 90% of USD is tainted with cocaine. Imagine if they came out today and said every tainted note will be confiscated today (without reimbursement), and from here on out anybody that is found with a tainted note faces criminal charges. Its a smooth brain thought process from people that do not understand how anything works.