There were also long term failures, but the investors are throwing out the baby with the bathwater.
After their flight scheduling meltdown due to outdated software it took them two weeks to restore back to a normal schedule. https://en.wikipedia.org/wiki/2022_Southwest_Airlines_schedu...
They've also made some longer term strategic flops, like investment into Hawaii, which by its isolated long-haul nature is significantly different from the rest of their flights (usually short hauls that can maximize aircraft utilization per day)