I'm not here to defend SolarWinds, and it's entirely possible that they were a "bad investment pretending to be a good one", but I have some issues with this framing.
First, contrary to your assertion, there is no doubt that they're in trouble because of getting hacked by a nation state (and dutifully disclosed it). This wasn't some routine audit, wasn't a whistleblower complaint. The only reason the SEC went after them is that they had the misfortune of falling prey to an attack that few other businesses could conceivably repel. So, I'm not sure that's sending a great message.
Second, the complaint isn't showing that the company brazenly and deliberately deceived investors. It's not that the SEC peeked under the hood, immediately realized this is messed up, and had to act. No, they spend months poring over every email - and all they came up with is not exactly a smoking gun. The whole complaint is basically "the company only made generic investor disclosures, but we found instances where specific employees pointed out more specific deficiencies."
Ignoring the one-sided narrative of the complaint, the actual quotes they have don't paint the picture of a deliberate conspiracy. They paint the picture of normal day-to-day communications where people sometimes say dumb things, blow things out of proportion to try to get resources, etc.