I believe that the fact that bugs are hard to fix and that operations are hard to revert is a pretty common property of most crypto-currency/asset/contact and that's what makes them IMO impractical for many usages, and in particular currency
That fact that it can happen at all when a time-proven solution has already existed for centuries is telling. I don't know why people think having irreversible transactions where no recourse, even legal, can force a reversal of the transaction, is a good thing.
The rate at which bugs like this happen isn't the dominant metric of risk here, it is that when they happen they are often catastrophic and ruinous. And so it could be that, though rare, playing in this game eventually equals ruin the longer you are in it. Good discussion of these types of risk[0], "The Logic of Risk Taking" by Taleb
1 crypto project out of thousands does not represent them all.
the reason this tweet is even being discussed is because it is so unusual.