I usually just use another profile for the stuff that I clear cookies when closing the profile. The other profiles I just use for a limited of sites that need logging in, each site is in its own container and I don't browse other sites on those profiles.

If I ever need to fill the login, I just do any of these:

- KeepassXC has auto-type feature, so I just choose the needed one and let it auto-type - I enable the extension only when I need to log in and choose the one I need to fill (not auto-fill, but only fill when I click on the account from the extension pop-up dashboard).

I try to limit my account creation to the minimum. HN is one of the few, for the better or for the worse as sometimes I just think I should nuke it and stop wasting time commenting.