I was at Amzn early '00s when we lost 95% of our market cap. Later at FB I negotiated a down-round in '09, and then in '12 our stock dropped 50% post-IPO. I was on the board of a public company that went bankrupt (Borders) and a start-up that went under (Hello). Some lessons:
If you notice something at your company below standards and don't fix it or make sure someone else does, you have set a new standard.
Complaining about it does not count as fixing it.
If someone gets upset/tells you to stay in your lane, they've set an even worse new standard.