>The Latin effectively means "after death"

language evolves over time

post mortem is even in dictionaries (meriam, oxford, american heritage) as "an analysis or review of a finished event"

"Finished" being an important word. Seems like this Bazzite project is not finished and so post mortem is in fact a poor choice of words.

We are splitting hairs here probably. After reading the article it looks like the author wrote it as a look back on their relationship with bazzite. A more descriptive one could be “bazzite and me - a post mortem” or something. It doesn’t come across as a bad faith title, at least to me