I originally went with kbin over Lemmy because the kbin webapp looked and functioned (for me) so much better. But now Memmy has gotten pretty good and close to Apollo so I’ve moved there. For me it’s all about ease of interaction/function.

I think their point is password managers make it very easy to have completely unique passwords, and if your Lemmy password is compromised you can change it without worrying about any other accounts being compromised. Not that a manager would magically protect you from ever being compromised.