Pinterest - Old or new accounts , which performs better?


I’m working with a IG “influencer” (at 50k followers) who is expanding to Pinterest and a blog.
She says she has quite an old personal account on Pinterest that she hasn’t used for years and she would rather start a new one.

In terms of advantages or benefits, is it better to start off a new fresh account or old accounts do better?
Here they say old ones have more trust (point 7), but I cant find that anywhere else