I have a friend who works at Rockstar. I have forwarded the blog post to him.
ask him from me what on earth is wrong with R*
Short answer: it doesn't make enough money, it doesn't matter.
GTA V has made 6 billion in revenue, it's probably the most profitable video game in history by a large margin.
GTA V is profitable, fixing bugs is not.
You could easily model how increased retention/engagement rates would translate to increased microtransaction revenue from drastically decreased load times. You could even bucket test it if you wanted to directly quantify the results, but I'm sure that the cost payback would be a matter of days.