However, that Twitter can't keep up with the load is completely unsurprising after the way Musk treated Twitter's engineers. You can't indiscriminately shed 80% of the company[0] and expect to have magically retained the key people who understand your distributed system well enough to adapt it to new strains and pressures. There were people in that 80% who knew how to solve this problem and are no longer available to help. There are probably people in the remaining 20% who know how to solve it but are afraid to speak up because Musk has created a hostile work environment.
[0] https://www.engadget.com/80-percent-of-twitters-full-time-st...