Expired Tumblrs with backlinks removed

Hello guys, i have arroung 60 tumblr accounts with high 98 DA and arround 30 PA. The backlinks pointing to them seems to be removed. Will these web 2.0 give any power to my money site?
Thank you.

All tumblr accounts have the same DA as that is the value given to the domain tumblr.com

What are you checking them to find they have 0 backlinks? It is uncommon for 30PA to have no backlinks.

If they do genuinely have 0 backlinks they will have very little to no SEO benefit to them.

No backlinks, no link juice. So it's useless although it has high PA.