They suggest avoiding extensions, instead use the native Windows Mac or Linux apps.
I use the Bitwarden password manager. I use Firefox. I turn off the password function built into FF so they don’t conflict.
What do you mean? I think it’s prudent to avoid browser extensions in this case.
By native apps, I mean the password manager app built by my password manager provider for the various OS’ - Windows Mac or Linux. Why would I want to avoid those? I don’t mean something built by Apple or MSFT or Ubuntu, heck no.