Not all, pandemic years were fucking glorious in tech. Then the rich decided to punish us for being both more productive and happy. Because we can demand more pay when we aren't scared.
Twitter servers were a benchmark in global performance up until he started fucking around with them. They were included on latency tests. The second he touched them latency tripled. Never went back down. He turned Twitter from a tech company leader into a social propaganda network worth a fraction of itself.
Plus the whole reliability issues.