It's a lot of money to forgo on the basis "the great unwashed who don't own shares directly won't like it" -Their superannuation and investment funds very probably would want this money recovered, if there was a good chance of winning the case.
Since when was HPE popular / on a good reputation anyway?
But the last HP system I interacted with had a TPM which drove me crazy (it was a DNS system using the TPM to manage DNSSEC keys).
The point is, this is about shareholders and boards. The people who judge a company by how much money it makes them not by how good the equipment is.
HP-UX was a dog of an OS. But they made good systems during that time, and made their shareholders very happy.
This time it would have been much better if he had been convicted.
As with most of these cases it's hard to exactly prove that he knew and willingly did it instead of being ignorant and mistaken.
The CFO did get convicted and the CEO washed his hands off.