These pensions and their medical side are the reason why the ACA did not touch golden medical plans because the vast majority are in this area along with certain other larger private pension systems. By the way, the House silently dropped that provision entirely from the ACA in 2019 so they any taxation of them is gone.
My favorite story to fall back on is provided below... and there are other states worse off. This type of largess should never have been allowed nor should the tax payer bail them out. People bemoan the pay of executives at private companies, well guess who is right up there in many cases.
https://www.forbes.com/sites/adamandrzejewski/2018/10/26/ill...