Thats not the fault of the engineer(s). A surge in traffic in the 80s or whenever it was initially created very well may have been able to be handled as designed and its normal traffic in modern pre-COVID times was the equivalent of a constant "surge" when initially designed. It was already on life support and needed a rewrite 10 years ago. Some software engineering certification/quality board wouldn't account for 30 year old systems design and population. Those are political and budget/prioritization issues. It would be a near equivalent of a bridge that was built then ignored for 50 years collapsing when a modern 18 wheeler drives over it.
All the new systems getting spun up ASAP are just quick hacks to try and get some way of addressing the problem. They are bound to be full of failures by the nature of the rapid development cycle and current crisis. In a situation like this, a quality board like proposed would be granting exceptions left and right because theoretically, something is better than nothing.
And what if that government body established a policy that all contractors had to be certified engineers who hadn't lost their certification due to past negligence? Suddenly there's a much higher floor for "lowest bidder".