Definitely recommend using one. Don’t have a preference for any particular one, I use Google’s for simplicity sake. But unless you have a complicated system that allows you to have different passwords for every online service (or maybe if you have a great memory) it’s simply more secure to use a password manager. Most sites have emails as logins, and if you reuse the same email/password combination you’re just asking for trouble for when one day one of those sites get hacked, your password is sold, and someone spams your combo across all popular services and somehow ends up in your bank.
Calling PP a political org is too obtuse a message to view this response as a simple mistake or miscommunication. Unity is apparently run by conservative hacks and I hope they collapse.