The career suicide wasn't escalating (although probably that was job suicide). The career suicide is venting and airing all of your former employee's dirty laundry. Unless your former employer is doing something deeply unethical, writing hit pieces against them after you leave is going to make you less attractive to future employers. Before this article, employers would see "experienced and available cloud engineer." After this, employers would see "backstabber who was probably fired for being a pain."

But also, this is Hacker News. Many of us work for companies that are largely making the world worse in exchange for large salaries. Many of us have, probably unconsciously, built our lives around not doing what we think is right in exchange for not getting fired.