Bitcoin experienced a similar incident early in its life and the community and block producer response was similar to the response to this incident. https://en.bitcoin.it/wiki/Value_overflow_incident

There have been comparable incidents on other proof of work blockchain networks.

Whether your argument is for Bitcoin maximalism or the superiority of proof of work over proof of stake or proof of delegated stake (what Steem uses), neither is well supported by your inference of a spotless history for them.