Bitwarden exploit was already patched. And required a domain joined PC with Windows Hello active, and the attackers already had access to the DC. Not exactly a large vector. Also enterprise PCs shouldn’t be using windows hello to begin with, IMO. Now if we look at CVEs affecting browser password managers, there are literally exploits for download on GitHub.
2 years seems perfectly reasonable. I thought you were gonna say every 30-60-90 days.