So does that mean this article is criticizing the government for NOT spending more money to create a second report that contained all the information from another report?

they had previously studied this attack

I don't see that stated in the article. All I can find is this ...

• For its third, the board investigated a separate 2023 attack, in which Chinese state hackers exploited an array of Microsoft security shortcomings to access the email inboxes of top federal officials.

So DHS decided to rely on that info which never looked at SolarWinds ...

• Silvers told ProPublica that DHS decided the board didn’t need to do its own review of SolarWinds as directed by the White House because the attack had already been “closely studied” by the public and private sectors.

It’s a problem that the wealthy can control both what happens and the narrative surrounding what happened.

A full, public accounting of what happened in the Solar Winds case would have been devastating to Microsoft. ProPublica recently revealed that Microsoft had long known about — but refused to address — a flaw used in the hack. The tech company’s failure to act reflected a corporate culture that prioritized profit over security and left the U.S. government vulnerable, a whistleblower said.

Same shit different decade

Sounds like a government backdoor was sold out.

Maybe I’m not remembering things right, but the solarwinds attack was a supply chain attack.

You aren't misremembering, that's what we were all told however the reality was a bit different. MS had been ignoring a serious security vulnerability for years. That vuln was eventually used to breech SolarWinds and then that was leverage to breech everyone else.

https://www.propublica.org/article/microsoft-solarwinds-what-you-need-to-know-cybersecurity

There were two supply chain attacks, one on solarwinds orion, the other on Microsoft Cloud Services.

Heres the vuln MS knew about in advance that allowed MS Cloud to be comprimised:

https://en.wikipedia.org/wiki/Zerologon

Correct.

And he was caught because his VPN had a lapse in the connection which exposed his actual IP address. It was a disgruntled employee. Not a Russian attack.

Though the Microsoft attack this year, I believe was Russian in origin.