I don't see PBKDF2 as a full footgun, but maybe as the minimally still-acceptable method. When I was building my system for E2E messaging (pritact.com) I started out with PBKDF2 but kept mentally revisiting the iteration count before biting the bullet and switching to Argon2.

Actually it looks like Argon2 is being discussed as of just a couple hours ago https://community.bitwarden.com/t/switch-to-argon2/350/24